1 week late. is it too early to take pregnancy test

1 week late. is it too early to take pregnancy test

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When to Do Pregnancy Test?

Having early pregnancy test can affect the accuracy of the result so better know when to take a pregnancy test. But before anything else, it is best if you will know and understand first how pregnancy test works. Pregnancy tests are dependent on the presence of a hormone called human chorionic gonadotropin or hCG, If it is a home pregnancy test, it is best if you do it in the morning for the quantity of pregnancy hormones that are present in the urine are highest at this time.

How Much Are Pregnancy Test?

Pregnancy tests can cost you about $7 to $18. It depends on where you plan to take the test.

When to Take a Pregnancy Test Calculator?

Pregnancy test calculator can help you decide when to take a pregnancy test. It is used to predict when is the effective time when to take a pregnancy test for more accurate results. If you are confused when to take the test, this can be of help to you.

Best Selling Pregnancy Test Kit

When Is The Earliest to Take a Pregnancy Test?

The earliest time when to take a pregnancy test is after you missed out a period. Take for instance; if your luteal phase or the time between your ovulation and when you get your period is fifteen days, then it is best if you take the test four days before you miss your period. That is after twelve days of ovulation. A person with longer luteal phase has higher chance of accurate results. Studies show that 80% accuracy of results is detected when the time you take the test is on the 28 day of your menstrual cycle.

When Is It Too Early To Take a Pregnancy Test?

It is understandable for women to get excited and all to take a pregnancy test. But it’s way too early to test if you have just notice symptoms of early pregnancy and you didn’t consider the day of ovulation. Better be careful on when to take a pregnancy test because it can lead you to incorrect results. It is only a matter of time before you get the result of your pregnancy test so be patient.

Early Pregnancy Test

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If you think you could be pregnant, it’s best to know when you can take a pregnancy test. The best time to take an early pregnancy test depends on what type of test you are taking.

There are two types of pregnancy tests, a blood test and a urine test. Both look for the pregnancy hormone called Human Chorionic Gonadotropin, usually referred to as hCG, which is only found in a woman’s body if she is pregnant. The hCG hormone is made by the early cells of the pregnancy called the trophoblast, and these will later become the placenta.

The difference between the two tests is when they can detect hCG. Blood testing can detect hCG about eight to ten days after ovulation and in most cases urine testing (home pregnancy tests) detect hCG about two weeks after ovulation. The level of hCG is measured with a blood test known as a quantitative test, usually called a “quant beta” by doctors. The urine test is a yes or no version, and is called a qualitative test.

hCG Measurement — “Quant Beta”

The hCG hormone is measured by its concentration in the blood or urine, and is reported in milli International Units per milliliter, or mIU/ml. A thousand milliunits equals one unit, so a milli IU is one-thousandth of a unit. A milliliter is one-thousandth of a liter. The term cc is also used sometimes instead of ml. One cc is one cubic centimeter, and is equivalent to one milliliter (one ml.).

Pregnancy tests with a sensitivity of 20 mIU/ml are more sensitive than tests with a 50 to 100 mIU/ml detection. Manufacturers will display how sensitive their tests are using mIU as the standard unit of measure.

Test sensitivity walks hand in hand with early detection. The lower the number, the sooner a test can detect pregnancy. The most sensitive pregnancy tests can detect hCG levels as low as 20 mIU, which occurs about eight days following implantation of the egg.

There are many benefits to taking a home pregnancy test—they are cheap, easy, and more important, private. By taking the test privately, you are able to take the test when you are ready and you can react however you want to. Nobody needs to know you have taken it, including your spouse, friends, parents, or other family members.

The urine test should be done with the first urination of the morning, as hCG is at its highest level at that time and is easiest to detect. If you are unsure about your results, you should make an appointment with your doctor so he or she can confirm the results with a blood test. Urine tests just show positive or negative. They cannot tell you how far along the pregnancy is.

Home pregnancy tests, if done correctly, can be 99 percent accurate. However, many women test too early in their cycles, not allowing enough time for hCG to build up in the system. It’s best to take the test after you have missed a period, or 14 days after ovulation. Testing any earlier can give you false negative results.

If you believe you are pregnant but get a negative result, take it again a few days to a week later (that is if you have still not started your period). At that point, if you get a negative result but are still unsure about it, visit your doctor.

Most women do not know exactly when they ovulate. Ovulation is the key ingredient in the conception formula. A woman can only get pregnant when she ovulates. When a woman says “my period is late,” she actually means her ovulation date is late.

The timing of the menstrual cycle timing can vary from one woman to the next; we know that every woman starts her period almost exactly 14 days after she ovulates. That’s why pregnancy tests should not be taken too early. If you have a long cycle, you might have conceived after the “textbook” day 14 date of ovulation associated with a 28-day cycle.

When an egg is fertilized after you ovulate, it takes about a week to travel through the fallopian tube to the uterus and implant. It’s only after a fertilized egg implants in the uterus that your body starts producing hCG. Even then, it takes time to build up the levels of hCG in your body. If you did conceive but you test too early, you might receive a negative result because the fertilized egg hasn’t had time to become implanted.

Chemical Pregnancy

Have you ever heard the expression, “you can’t be a little bit pregnant”? Well this is not exactly true. Now that we have sensitive tests for hCG, we have learned something about early pregnancy that we never knew before. Yes, you can be “a little bit pregnant” and not ever know. This is called a chemical pregnancy.

If an hCG test is done before the period is late and comes back positive, sometimes the menstrual period will still show up at the expected time, or perhaps a couple of days late. This is a normal process that takes place in a woman’s body, and we have no idea how often it occurs. This is the problem with doing a pregnancy test too soon. You might get a positive test result, with all the associated emotional implications (good or bad or who knows), and yet in just a few days your period shows up. This is a chemical pregnancy.

This phenomenon is normal and common. Doctors do not call this a miscarriage. No treatment is required. We do not add it to your pregnancy score. Did you know that doctors count how many times a woman has been pregnant? We call it the G score. G stands for gravida. There is also a P score, which stands for para. Any pregnancy, whether it leads to a birth, a miscarriage, or termination, adds 1 to the G score.

If you are pregnant for the first time, you are a G1, P0. After you have a baby you are a G1 P1. A chemical pregnancy is not counted toward this score. So yes, you can be a little bit pregnant and never know it. This is why physicians normally advise women to do a pregnancy test after they are late for their period. Try to be patient, and you may save yourself from the emotional experience of a chemical pregnancy.

Positive Pregnancy Test: When and How Long After Implantation

A pregnancy test can show a positive result a few days after implantation has occurred. Most women who want to get pregnant are very keen to take a home pregnancy test (HPT) to see if the result is positive. Depending on your body and the levels of hCG hormone, early pregnancy can be detected by a pregnancy blood test as soon as 3-4 days after implantation. Usually, a urine home pregnancy test takes a few days longer to detect a pregnancy and may show a positive result as soon as 5-7 days after implantation.

Even if the home pregnancy test result is negative, it doesn’t necessarily mean that you are not pregnant. How soon an early pregnancy can be detected depends on the levels of the hormone called human chorionic gonadotropin (hCG). This hormone is produced during pregnancy. Blood and urine pregnancy tests check for elevated levels of hCG which start to rise right after implantation. A positive urine home pregnancy test will undoubtedly mean that you are pregnant and should visit your doctor for hCG blood test.

Most home urine pregnancy test kits advise that you should wait until the first day of your missed period before taking the test. This is when levels of hCG will usually be high enough for the majority of pregnancy testing kits to show a positive pregnancy result if you have conceived. However, some urine pregnancy testing kits are more sensitive and may be able to show a positive result and detect early pregnancy quite soon after implantation.

If you have already waited for a few days after your missed period to take a pregnancy test, and it is still negative, chances are that you are not pregnant.

You may want to take a pregnancy test, but you probably have questions such as: How long after implantation can I test? How long do I have to wait after a missed period before I take a test? In this article, you will find out how early you can detect pregnancy using at-home pregnancy testing kits. You will also learn about the other early signs of pregnancy that can help determine if implantation has taken place.

How Long After Implantation You Need to Take a Pregnancy Test

How early you can take a pregnancy test depends on a number of factors such as the sensitivity of the home pregnancy test (HPT), levels of human chorionic gonadotropin (hCG) in your body, and the regularity of your menstrual cycle.

A pregnancy test can only become positive when an egg is fertilized after ovulation. According to the American Pregnancy Association, ovulation happens about 11 to 21 days from the start of your last period. 1 At ovulation, an egg is released and lives for up to 24 hours in the fallopian tubes waiting for a sperm that lives long enough to fertilize it. Some signs of ovulation include discharge, light abdominal cramping, and some ovulation spotting.

When the fertilized egg attaches itself to the wall of your uterus, implantation occurs. As soon as implantation happens, your body produces hCG and the pregnancy hormone can be detected in a pregnancy test. At the same time, you may have other signs of implantation such as light spotting that lasts a day or two, mild cramping, tender breasts, and an increased need to pee.

The length of time after implantation you need to take a pregnancy test to check if it’s positive or not depends on the sensitivity of the pregnancy test that is carried out. The two types of pregnancy tests to check for early pregnancy are:

  • Urine hCG pregnancy test kits that you use at home and show up a mark to indicate a positive pregnancy test or a negative test result.
  • Pregnancy blood tests at the doctor’s office to check for hCG in blood serum in order to detect a pregnancy.

Urine hCG test – when is it positive after implantation?

Some of the most sensitive urine pregnancy test kits can detect early pregnancy in less than a week after implantation. The European Society of Human Reproduction and Embryology, found that urine pregnancy testing kits will usually show a positive result 3-4 days after implantation. By 7 days (the time of the expected period) 98% of pregnancy testing kits will be positive. 13

Urine pregnancy test kits have an hCG sensitivity of 25 mlU/ml (sensitivity of 25 units per litre). The American Pregnancy Association say that a reading of more than 25 mIU/ml in urine indicates pregnancy. 2

The levels of hCG are detectable a few days after implantation. For example, a report published in a German medical journal said that sensitive pregnancy testing kits can detect hCG as early as 4 days or even 10 days before your next period is due. 3

According to Dr. Nivin Todd on WebMD, implantation occurs 3-4 days after the egg is fertilized. This may result in implantation bleeding which can be one of the earliest signs of pregnancy. Dr. Todd says that hCG levels will show up in most urine tests from as early as 7 days before you expect your next period. 4

Sometimes, urine home pregnancy tests show up “false-negative” results because not enough hCG hormone has been detected yet. This means that you could still be pregnant even though the pregnancy test shows up as negative. However, in a few days, the pregnancy test will become positive in women if implantation has taken place.

You can test for pregnancy using a urine pregnancy test as early as a week before your next period is expected. Even if the results are negative, you shouldn’t lose hope. Take another urine pregnancy test after 5-7 days to see if it becomes positive. According to Lab Tests Online, if you are pregnant, an early positive urine pregnancy test will be reliable 10 days after your missed menstrual period. 5

Blood hCG Level and early pregnancy test

A pregnancy blood test will be positive 2 or 3 days before a urine pregnancy test. Pregnancy blood tests check the levels of the hCG hormone and they are more accurate than urine pregnancy tests as they can show the exact levels of hCG.

Doctors also use hCG levels to determine how many weeks you are pregnant and to monitor your health during pregnancy.

A blood pregnancy test will become positive very soon after implantation. According to Dr. Melissa Conrad Stöppler on MedicineNet, positive pregnancy blood test result can show up as early as one week after conception. Because implantation happens 3-4 after conception, you might get early pregnancy blood test results that are usually positive within 3 or 4 days after implantation. 6

In very rare circumstances, you might have a “false-positive” pregnancy test result. Dr. Stöppler says that medication, tumors, or other conditions can show up as a positive pregnancy test when there is, in fact, no pregnancy.

Pregnancy Test Soon After Implantation – How Accurate Is It?

A positive pregnancy test is almost certainly correct and is usually very accurate. However, you always need to follow the instructions of the home pregnancy test correctly.

Doctors from the National Health Service say that if the pregnancy test results are positive, then you are probably pregnant. However, a negative test result is less accurate and isn’t necessarily an indicator that you’re not pregnant. Sometimes, taking the pregnancy test too soon after implantation doesn’t allow for high enough levels of hCG hormone to develop. 7

Pregnancy tests can show a positive result when the concentration of the pregnancy hormone (hCG) is high enough to be detected in a blood test or urine sample.

According to Dr. Traci Johnson on WebMD, there are 6 factors that can affect how accurate a pregnancy test is soon after implantation. Some of these are: 8

  • When the urine test was taken. It is usually recommended to take the test first thing in the morning. This is because the concentration of hCG will be higher and makes a positive pregnancy result more likely.
  • When you ovulate. Each woman’s menstrual cycle is different and ovulation may not always happen exactly when planned. Although the average time of ovulation is mid-cycle, your body can release an egg as soon as day 11 of your cycle and as late as day 21.
  • When implantation happens. It can be difficult to know exactly when implantation happens. A fertilized egg takes between 6 to 12 days after ovulation to implant itself in the uterine lining. 1
  • How soon after implantation you take the test. There needs to be enough concentration of hCG for a positive pregnancy test result. It may take time for pregnancy test results to become positive if you have successfully conceived.
  • The sensitivity of the pregnancy test. Doctors from the Mayo Clinic say that some pregnancy testing kits are more sensitive than others. Therefore, some may require a higher amount of pregnancy hormone hCG to show a positive pregnancy test result. 9
  • Blood and urine hCG levels. There are also various factors that can affect pregnancy hormone levels. For example, if you drink too much fluids, you might not get a positive pregnancy reading when taking a urine test soon after implantation.
  • The European Journal of Epidemiology says that smoking and being overweight can also negatively affect hCG levels. This makes it harder to test for early signs of pregnancy soon after implantation. 10

    However, if you are pregnant, then pregnancy test result is usually positive within 7-10 days after you have missed a period.

    How to Test for Pregnancy Soon After Implantation

    Most women use at-home urine pregnancy test kits because they are cheaper and quicker than making an appointment with your doctor for a pregnancy blood test. These will test positive for pregnancy when hCG levels reaches at least 25 mIU/ml.

    To use a urine pregnancy test soon after implantation to check if it tests positive, this is what you should do:

  • Wash your hands with water and soap.
  • Remove the testing kit from its packaging and sit on the toilet seat.
  • Depending on the type of test, you either need to urinate on the testing stick or into a small plastic cup.
  • The urine sample should be from midstream, so you should pee a little before collecting urine in the cup or placing the stick in the urine stream.
  • If you are using the urine collection method to test for pregnancy, follow the instructions on using the dropper.
  • Now, it’s time to wait. The best thing is to do something to distract yourself for the 5 minutes or so it takes the test to show positive or negative.
  • Check the results.
  • What do Pregnancy Test Results Mean After Implantation?

    Positive pregnancy results usually mean that you are pregnant. Most home pregnancy testing kits show the results by means of a line to indicate a positive or a negative result. Dr. Traci Johnson on WebMD says that even if the line for a positive pregnancy test result is very faint, it still means you are pregnant. 8

    If your pregnancy test is positive, then it means that you should make an appointment to see your doctor. The earlier you can arrange for prenatal care, then the better health you and your baby will enjoy during pregnancy.

    Negative pregnancy results may not necessarily mean that implantation hasn’t happened. You could still be pregnant because you tested too soon after implantation or you took the test the wrong way. Dr. Traci Johnson recommends retesting for a positive result in a week to check for pregnancy.

    If the HPT still tests negative over 10 days after your missed period, you should speak to your doctor. A late or missed period could be a result of a hormonal imbalance as well as emotional stress, excessive weight loss or gain and problems with pelvic organs. 12

    Early Signs of Pregnancy Very Soon After Implantation

    Even before an hCG pregnancy test becomes positive, you may have some signs of implantation that show up before a pregnancy test confirms that you are pregnant.

    Implantation spotting. Many women experience implantation spotting as one of the earliest pregnancy signs. Implantation bleeding looks like very light spotting that could be a rusty brown or light pink color. Spotting associated with implantation usually last up to 2 days.

    Implantation cramping. Around the time when the fertilized egg attaches to the uterine lining you might experience mild cramping. Implantation cramping usually happens just before or just after you notice implantation spotting.

    Breast tenderness. Doctors from the American Pregnancy Association say that your breasts may become sore when implantation happens. In fact, your breasts may appear swollen and tender even as early as 1 to 2 weeks after conception. 11

    Other signs of implantation or early pregnancy that you might notice before a pregnancy test tests positive are frequent urination, food aversions or cravings, backaches and headaches, and mood swings.

    If you notice these signs of pregnancy, and you know that you had intercourse around the time of ovulation, you should take a home pregnancy test. If the results are negative, they may become positive several days later as pregnancy hormone (hCG) increases.

    How Soon Can I Take a Pregnancy Test?

    Marissa is the writer of ThePracticalMommy and owner of Mommy Knows What’s Best. She is a stay-at-home mom to four and was a teacher.

    How Early Can I Take a Pregnancy Test?

    When Can I Take a Pregnancy Test?

    “Am I pregnant? What are the pregnancy symptoms? When can I take a pregnancy test?”

    When you are trying to conceive and have a baby, you might constantly imagine you’re experiencing pregnancy symptoms. You start to feel the best-known pregnancy symptoms first: nausea, bloated belly, bigger breasts, the urge to use the bathroom every 5 minutes, etc. You may even develop cravings for certain foods. You might look in the mirror and know, just know, that a baby is growing inside.

    Truth is, it might be all in your head.

    You won’t know for sure until you take a pregnancy test. When you’re trying to conceive, one of the hardest things is waiting to take the home pregnancy test (HPT) and see a positive result, but you must wait 2 or 3 weeks from the time of ovulation. This can seem like forever, especially if you have been trying for awhile.

    Below, I’ve gathered some facts and figures to give you something to do while you’re waiting. Here, you will learn:

    • how early you can expect to take a pregnancy test,
    • how pregnancy tests work,
    • and when you can expect accurate results based on your menstrual cycles.

    How Early Can I Take a Pregnancy Test?

    Ovulation Cycle

    When Will I Ovulate?

    In order to know when you ovulate, you must know how long your menstrual cycle is. The average cycle lasts about 28 days but of course, there’s a wide range of normal (anywhere from 23 to 35 days), so you can find out how long your cycle is by counting from the first day of one period to the first day of the next period.

    Most women with regular periods ovulate sometime between the 11th and 16th day of their cycle. That means they may ovulate anywhere between 11 to 16 days after their last period started.

    Starting about 4 or 5 days before ovulation, a woman‘s peak fertile time lasts about 5-7 days although there are only 1 or 2 days when she is most likely to become pregnant: the day prior to and the day of ovulation. But since the egg might be viable for 12-24 hours and sperm can live in the woman’s body for 3-5 days, her most fertile time is considered to be about 5-7 days. Most ovulation charts stop at ovulation but you should continue trying to fertilize that egg for up to 24 hours after it’s been released.

    But still, if you’re trying to get pregnant, these numbers provide quite a wide and imprecise time frame. Plus, for many women who do not have regular periods, trying to figure out the dates of ovulation can be frustrating. What can you do?

    • Take and chart your basal body temperature
    • Take careful records of the length of your menstrual cycles
    • Track your cervical mucus changes
    • Use ovulation urine tests available at many stores to identify the LH surge

    Do You Track Your Cycles?

    Free Android Apps for Tracking Ovulation and Periods

    • My Days–Period & Ovulation (Christian Albert Mueller) (this is the one I use)
    • Period Tracker (GP International LLC)
    • Pink Pad Free (Alt12 Apps)
    • Period and Ovulation Tracker (Tom Gustafson)

    I Have an Irregular Cycle! Now What?

    If you have an irregular cycle, you may need to use an ovulation kit to determine when your best chances for conception are. You can also speak with your doctor about how to determine your ovulation dates and how to help get your cycles on track.

    When Is the Best Time to Get Pregnant?

    Once you’ve narrowed down your time of ovulation (see above), then you have a better idea of when your egg is viable and ready to be fertilized by the sperm.

    To better your chances of becoming pregnant, it is recommended that you have intercourse every other day around your time of ovulation. (If instead of using the other ovulation tests mentioned above you’re relying on just your calendar records to figure out when you’re fertile, that means after day 11 of your cycle you should have intercourse every other day, up until the 17 th day.)

    Why every other day? Why not every day for everyone? Once the sperm is released during intercourse, it takes nearly a full day for the man’s body to replenish the sperm supply. If you have intercourse every day, it decreases the chances that there will be enough quality sperm that will be strong enough to reach the egg. This is not true for all, of course, but it should be considered.

    Early Pregnancy Symptoms

    How Soon Can I Take a Pregnancy Test?

    How long did you wait to take a home pregnancy test?

    How Soon Can I Take a Pregnancy Test?

    After intercourse, many women want to take the pregnancy test immediately. They may even feel all the symptoms I mentioned above, hoping they have a little bun in the oven.

    Unfortunately, it is not that easy or quick. Let’s consider the cycle again. You probably ovulated sometime around day 11-16, so that means it will be about two weeks until your next expected period. Two weeks of waiting, wishing, and hoping…

    When can you/should you take the test? Here’s the kicker: not for another two to three weeks.

    Three weeks? You ask. When did it change to three. If you miss your period after waiting two weeks for it to appear, that’s great because the missed period is usually the first sign of pregnancy. Many women, though, who test on that very day will get a negative result on their ever-so-glorious pee stick, a.k.a the home pregnancy test.

    What Hormone Do Pregnancy Tests Detect? What are mLUs?

    Pregnancy tests detect the hormone hCG, or human chorionic gonadotropin. It is measured in mLus.

    An mLu is a measurement of the hormone hCG as it is in urine. It stands for mili International Units. It is the standard way to measure hCG per milliliter of urine. Simply put, it is a measure of the concentration of hCG in the urine.

    How Does a Pregnancy Test Work?

    Home pregnancy tests, HPTs, rely on one thing: the hormone hCG. HCG, or human chorionic gonadotropin, is the hormone used to detect a pregnancy. It is emitted by an embryo (a ball of cells that becomes a baby) after it attaches or implants itself to the uterine wall (where the baby will grow inside of you). When does that happen? Approximately 6-12 days after the date of conception.

    So let’s look at our calendar again. 6 to 12 days after conception, which happened around the date of ovulation, hCG is emitted from the embryo, which should be the date of your expected period. So why wouldn’t you get a positive result on that day?

    HCG is emitted in small increments which increase as the embryo and its placenta grows. At first, right after conception, these increments of the hormone are so tiny that they will not be detected by a HPT. The amount of hCG grows more and more as days and weeks pass, but still may still not be enough to detect on the day of (or a few days before, as some tests proclaim) your expected period.

    HPTs vary in the amount of hCG that can be detected. Some tests boast that they can detect as little as 10mlu of hCG to 25mlu of hCG, which means they might be able to detect a pregnancy as early as 7-10 days after conception. Those tests tend to be the ‘early response’ brands—ones you can use before an expected period—that cost a bit more than the average test. Other tests detect 25mlu-50mlu or more. These tests are better at detecting a pregnancy after a missed period.

    So why is it better to wait three weeks to use a HPT? You are more likely to get a positive result from the test if you are indeed pregnant since your hCG levels will be higher.

    If you test before your period and it’s negative but you still miss a period, you’ll retest again in a few days, using another test. What is that going to cost? Well, it depends on the brand, type of test, and how they are packaged. For one generic test at a dollar store, you’ll spend—you guessed it—a dollar. For one generic test at a supermarket, pharmacy, or a Target/Walmart, you’ll spend up to $3-$4. For name brand tests, you’ll spend around $5-$6. Sometimes, generic and name brand tests are packaged in twos and threes and cost anywhere from $10-$15. There are even some packages with four or five tests in them, costing upwards of $20-$25. Of course the manufacturers don’t mind if you buy more tests so they can make more money.

    Bottom line, if you start testing too soon, you’ll go through at least two tests, if not more. Just remember: don’t be obsessive about taking the tests. If you test negative one day, wait a few days and then retest, which will give your body time to build up the hCG if you are pregnant. If you insist on testing every day, you might end up spending a lot of money and causing yourself a lot of unnecessary confusion.

    Early Result Pregnancy Tests

    These were my favorite tests to take. They are easy to use, compared to some of the cheaper tests out there, and have clear results. I was able to test three days before my expected period with these and got accurate results. Note that it won’t be the case for everyone. (affiliate link)

    What to Do While Waiting to Take a Pregnancy Test

    If you’re trying to conceive, waiting to take the test can seem like a lifetime. But there are some things you can do in the meantime. Until three weeks have passed, act as if you are already pregnant: get plenty of sleep, stay hydrated, take your vitamins (especially those with folic acid), stop taking harmful medications (i.e. ibuprofen, etc.), and refrain from drinking alcohol and smoking.

    How Many Weeks Do You Have to Wait to Get a Positive Result?

    If you’ve been reading, you’ll know that you may not be able to get a positive pregnancy result until you have missed your period. At that point, you may be considered four weeks pregnant, since pregnancy is dated from the first day of your last menstrual period, which is usually four weeks prior.

    Some women may not get a positive pregnancy result until after their fourth week or later, depending on how the hCG builds up in their bodies.

    Reading a Pregnancy Test

    Doctor’s Advice on Pregnancy Tests

    What if the pregnancy test is false?

    False negatives are common with home pregnancy tests, so you should prepare yourself for an incorrect result. If you feel like the result is not accurate, wait a day or so and test again.

    My Positive Pregnancy Test

    Faint Positive Pregnancy Test

    When Can I Get a Positive Pregnancy Test?

    Here’s where I can be pleasantly vague and say it’s different for every woman and it’s different with every pregnancy. Knowing when the best time for you to test depends on a few factors:

    • Do you have a regular period and have you been tracking everything—periods, ovulation, intercourse—on a calendar? If this is you, you can probably, potentially test the day of your next expected period and get a positive result if you are pregnant. With my first pregnancy, I had been very, very regular with my menstrual cycles—always 25 days for 13+ years—and I had been tracking everything so I knew the day I missed my period that I was pregnant without even having any other symptoms. The moment I used the HPT, I saw a positive result. With my fourth pregnancy, I tested three days early and got a positive result. Is it like that for everybody? No, but it is possible.
    • Do you have fairly regular periods but have not been very faithful about tracking everything? If this is you, I would wait until a few days after your missed period to take the test. If you’re not sure exactly when you might expect your period, go back to the last time you had your period and count about 30 days. If it has been more than 30 days, go ahead and take a HPT.
    • Do you have irregular cycles? This is a tricky one, since there’s no regular pattern to guide you. If this is you, I would suggest waiting for at least 35 days or more after your last period to take a HPT. Why so long? Sometimes women with irregular periods can have longer menstrual cycles, just as they can have really short cycles.
    • Have you already taken a test after waiting a week after your missed period, but it’s negative? This is where it might get frustrating for women. If you have missed your period (assuming it’s at least fairly regular) and waited a week but still get a negative result, you may have to wait even longer. Sometimes, it takes longer for the hCG to build up. I know and have read about women who didn’t get positive results until after they were two months along or even further! I myself experienced this with my second pregnancy. I missed my period, took a test after a week, and was disappointed when it was negative. More than two weeks later, still having no period, I took another test, and lo and behold, I was indeed pregnant. At that point, I was nearly two and a half months along!
    • Did you get your period but you still feel as if you may be pregnant? It does happen, believe it or not, that some women will experience bleeding in the first few weeks (or months!) of their pregnancy and still be pregnant. The bleeding isn’t actually a period; it is often the result of implantation or some other bleeding not directly related to the pregnancy. This may be a judgment call for you. You have to decide whether or not the ‘symptoms’ you are experiencing are from a pregnancy, regular pre-period fun, or just a bug. If the symptoms seem more like you are just sick and pass after two-three days, you’re probably suffering from a stomach bug or virus. If the symptoms persist more than a few days and you do not get a period, you may be pregnant. Your best bet? Wait until the absence of a period, and go from there. Or if you can’t wait, take a test. If it is negative but you still feel as if you might be pregnant, contact your doctor.

    Other Reasons for a Missed Period

    On the other hand, you may have missed a period or are experiencing a delayed period for other reasons: stress, increased amounts of exercise, an illness, hormonal imbalance, change in birth control, etc. This happened to me after stopping birth control, so I know how frustrating it can be! If you continue to get negative results but have still missed a period after 45 days, contact your doctor. He/she may want to see you for an exam and do blood work to see what is going on.

    Much of this information comes from my own experiences, but I also did my homework. Here’s a list of the books I read when I was trying to conceive my kids:

    Your Pregnancy Week by Week by Glade Curtis

    What to Expect When You’re Expecting by Heidi Murkoff

    Your Pregnancy and Childbirth Month to Month by the American College of Gynecologists

    Please note I am not a medical expert and can only give educated answers to any questions you have. Please seek proper advice and treatment from your doctor.

    По материалам:

    http://www.pregnancydietplanhq.com/when-to-take-a-pregnancy-test-the-right-and-easy-ways-for-home-pregnancy-test/

    Early Pregnancy Test

    Positive Pregnancy Test: When and How Long After Implantation

    http://wehavekids.com/having-baby/Am-I-Ready-to-Have-a-Baby-When-is-the-Best-Time-to-Take-a-Home-Pregnancy-Test-HPT

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