How To Tell How Many Weeks Pregnant I Am

How Late Is Too Late After My Due Date

Self-Managed Abortion: How Many Weeks Pregnant Am I? | Episode 2

This is why the question of how many weeks pregnant am I? is important to address. Basing due dates on LMP increases the risk of categorizing mothers as late or post-term. In these cases, your doctor will talk to you about inducing labor.

For truly post-term pregnancies, labor induction can be a safe and reasonable option. The primary cause for concern for the infant is neonatal mortality, as the risk for stillbirth sharply increases after week 42 of pregnancy. For mothers, risk of chorioamnionitis , obstetric complications, and maternal mortality increase after week 42.

Dating Pregnancy Using Ultrasound

Ultrasound in the first trimester is the most accurate method of dating pregnancy. During the scan, baby is measured and the age of pregnancy is estimated by comparing babys size against recorded averages. If there is a significant difference between gestational age according to LMP and gestational age according to the ultrasound, you may be given a new gestational age and due date based on the ultrasound measurements.

Your pregnancy may also be dated by ultrasound measurement if an LMP formula was not appropriate for your pregnancy for any reason. LMP formulas are not suitable in several situations including the following: LMP is not known or is not certain, birth control pills were taken in the two months before LMP, the menstrual cycle is irregular, you are carrying multiples .

Although the age of pregnancy based on ultrasound measurements is more accurate than the age of pregnancy based on LMP, both are estimates and not definitive statements.

How Likely Am I To Give Birth On My Due Date

Of course, a due date calculation is always approximate, whether it’s from our tool or from your doctor or midwife. Only 1 in 20 women delivers on their due date. You’re just as likely to go into labor any day during the two weeks before or after.

Want more information about how the weeks, months, and trimesters of pregnancy are counted? See our pregnancy timing chart.

Read Also: What Vitamins Can I Take To Help Me Get Pregnant

How Soon Can I Take A Pregnancy Test

With all this talk about pregnancy due dates, you may be wondering when you can take a pregnancy test. To ensure you get the most accurate reading, it’s best to wait a few days after your missed period to take a pregnancy test.

At-home urine tests measure the amount of hCG present in your body. If you take a pregnancy test before you miss your period, you may not get an accurate result, despite what some tests advertise.

If you’re getting a blood test in your provider’s office, you may get results sooner. These tests also measure the amount of hCG in your bloodstream, but they’re more sensitive than at-home urine tests. Blood tests may be able to detect pregnancy six to eight days after ovulation.

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Weeks Pregnant Baby Position

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When does the baby head turn down? This is usually after 26 weeks. By week 37, your baby should be in this cephalic presentation. If he isnt, you should consult your doctor as soon as possible.

You might be wondering how to tell if babys head is down. You can do this via belly mapping. This lets you know how the baby is positioned in your womb.

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First Response Pregnancy Test Accuracy Vs Date


Period is expected.

Test is 99% accurate

As you can see above, roughly one in four pregnant women who take this test will get a false negative when they take it six days before the day of their missed period. Five days before the day of the missed period, however, it will be accurate for 96% of women, and 99% of women will get the correct result if they take it four days or less before the day of the missed period.

In general, the accuracy of home pregnancy tests gets better the longer you wait to take them. If you take a test and it comes out negative and you still think you might be pregnant, wait three days and test again. If you test and itâs positive, youâre pregnant.

Other pregnancy tests are also very reliableâthey just canât be used as early as First Response. Most brands of pregnancy test are accurate from the day of the missed period.

Be sure to follow the testing instructions of the pregnancy test brand that you bought very closely. Different brands have different instructions.

How To Calculate How Many Weeks You Are

  • Start by counting the recurring day of your last menstrual period
  • Stop counting recurring days when you reach the present time.
  • The number of recurring days you count is the number of weeks you are now.
  • Example:count one week to the nextuntil you reach the present date.

    LMP = December 2, 2021

    1st Wed = December 9, 2021 = 1 Week2nd Wed = December 16, 2021 = 2 Weeks9th Wed = February 3, 2022 = 9 WeeksYou are 9 Weeks and 1 Day pregnant

    Another method to calculate how many weeks pregnant you are is to:

  • Count the days from the first day of your Last Menstrual Period until you reach todays date.
  • Now divide the counted days by 7.
  • The answer will be how many weeks you are now.
  • How Many Weeks Am I Formula:LMP = Last Menstrual PeriodHow Far Along Am I Formula:LMP = Last Menstrual Period*LMP date may be adjusted if unknown or following ultrasound.

    Each of these methods will give you the gestational age of your pregnancy.

    Also Check: What Can I Do If I Want To Get Pregnant

    Stay In The Know With Texas Adoption Center

    Having an answer to How do I know how many weeks pregnant I am? is necessary for your peace of mind and will help you to make plans accordingly. If these involve placing your child for adoption? The more you know earlier on, the better for all involved. If finding answers is proving to be a struggle, Texas Adoption Center can help.

    How Far Along Am I Four Ways To Figure Out How Pregnant You Are

    Am I Pregnant? How Many Weeks Pregnant Am I?

    Youre itching to know when your little one will arrive. Heres how to calculate how far you are in your pregnancy.

    Its a question youll hear over and over until youre holding a baby in your arms: When are you due? Everyone wants to know that magic date, and youre probably more than a little curious about how far along you are, too. Your due date may become a beacon or a deadline , but its important to remember that your due date will only ever be an estimate of the week youll give birth .

    That said, theres one big reason why an accurate estimate is important: in case of complications. If a woman goes into labour early, then we really want to know how far along she is, as best as we can tell, says Carol Scurfield, medical director of the Womens Health Clinic in Winnipeg. A week can make a big difference as far as the health of the baby is concerned.

    Do your best to calculate your due date as soon as you discover youre pregnant. Heres how to do it.

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    Other Reasons For Missing Your Period

    Here are some possible reasons for missing your period but having negative pregnancy tests:

    • Starting a new birth control method
    • Hormone imbalance

    If you suspect one of these reasons may be disrupting your normal menstrual cycle, and you have a negative pregnancy, test then you should speak to a health professional.

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    Will My Due Date Change When I Have A Scan

    Youll get a more accurate due date once you have your dating scan. This is usually done at around 12 weeks of pregnancy, and will be used as the final due date given to you, especially if there is more than 5-7 days difference between your date based on your last period and the scan, or if your periods were irregular or you had just stopped hormonal contraception prior to getting pregnant as it is difficult to know when you ovulated exactly. It will not change however if you have had IVF treatment to conceive, as the exact date of conception is then known.

    Ultrasound uses the size of the fetus to determine the gestational age . It is most accurate for dating purposes between 7 and 13 weeks of pregnancy. Earlier than 7 weeks and after 14 weeks, the measurements are not as precise in terms of calculating exact gestation.

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    What Is A Pregnancy Calculator

    A pregnancy calculator is a way for you to determine how far along you are depending on when your last period was. This requires you to know when the first day of your last period was.

    If you dont then you can always estimate but it might be a little off depending on how close you were to the actual date.

    Even when doctors determine how far along you are they use your last period as a determining factor .

    This helps you to determine those key milestones when you are pregnant such as when you can anticipate being out of the first trimester .

    Read Also: Mayo Clinic Pregnancy

    Pregnancy Week 37 Fetal Development

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    At this point, baby is too big to do much kicking and punching. Youre more likely to feel her stretching, rolling, twisting, and turning as it gets more crowded in there. Your uterine wall continues to stretch out, becoming thinner and letting more light through as baby starts to adjust to a more regular schedule.

    Currently, baby is practicing breathing by inhaling and exhaling amniotic fluid. The brain and lungs arent quite finished growing and developing, although if baby is born this week, everything is likely to be just fine.

    Also Check: How Fast Do You Get Morning Sickness When Pregnant

    Fun Facts About April 14 Babies

    Your little one will be confident, determined and fearless with a competitive streak.

    Known for its sparkle and resilience, this stone symbolizes eternal love.

    Abigail Breslin is an actress who rose to fame for her role in Little Miss Sunshine as a child and later starred in the series Scream Queens.

    What Is Naegele’s Rule

  • Move the date back three months
  • For example, if the first day of your last period was August 11, 2022 you would:

    • Move the date back 3 months
    • Your due date would be May 18, 2023.

    If your fertility app gives you a different date than the one calculated by your doctor, it most likely is because it was based on the ovulation date and not the date of your last period. If you ovulated earlier or later than day 14 of your cycle, this would shift your due date accordingly.

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    Who Should Get A Booster

    The FDA authorized Pfizer’s shot for people ages 12 and up and Moderna’s for ages 18 and up. For those who are up to date on their Covid vaccinations, the updated booster constitutes a fourth, fifth, or sixth shot, depending on one’s age and health status.

    But some vaccine experts wonder whether the shots are necessary yet for young, healthy people, given the lack of clinical trial data to demonstrate how well they work against the newer omicron subvariants.

    Nonetheless, Pablo Penaloza-MacMaster, an assistant professor of microbiology-immunology at Northwestern University, said the potential benefits seem to outweigh the risks.

    The way that I look at it right now is that it seems like theres not much to lose, he said.

    Estimation Of Gestational Age At Childbirth

    How Pregnant Am I?

    Childbirth on average occurs at a gestational age of 280 days , which is therefore often used as a standard estimation for individual pregnancies. However, alternative durations as well as more individualized methods have also been suggested. There is in any case considerable variation among individual pregnancies.


    Given that these gestation lengths are only estimates of an average, it is helpful to consider gestation time as a range of dates rather than as a single “due date”. The median is merely a guideline for the day at which half of all births occur earlier, and half of all births occur later. Births rarely occur on a due date, but they are clustered around due dates. A study of singleton live births in the US came to the result that childbirth has a standard deviation of 14 days when gestational age is estimated by first trimester ultrasound, and 16 days when estimated directly by last menstrual period.

    Naegele’s rule

    Naegele’s rule is a standard way of calculating the due date for a pregnancy when assuming a gestational age of 280 days at childbirth. The rule estimates the expected date of delivery by adding a year, subtracting three months, and adding seven days to the origin of gestational age. The result is approximately 280 days from the start of the last menstrual period. Another method is by adding 9 months and 7 days to the first day of the last menstrual period.


    Mobile apps

    Other suggested durations


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    Calculate Your Baby’s Due Date

    When was the first day of your last period?

    What’s the average length of your menstruation cycle?

    Your due date is a way of predicting a period of time when you might go in to labour, based on when you conceived. Its a useful way of monitoring your babys growth, either by examining your tummy or by ultrasound scan . Its also a way of your midwife or doctor to accurately plan your care in terms of visits, blood tests and scans .

    Most babies are born at full-term which is between 37 weeks and 42 weeks , a period referred to as “term”, when the baby has reached full maturity. On average, most pregnancies last around 40 weeks which is 38 weeks after conception or 280 days. However, no-one can predict exactly when you might go into labour and deliver your baby . If you are expecting twins or triplets, its highly likely that you will deliver well before the actual due date.

    Once you know your due date, it can help you prepare and plan for your labour and birth, as well as prepare your home for your baby.

    What Are The Risks Of Labor Induction If Im Not Post

    Induction is often the safest option for post-term pregnancies, but it may not make sense to discuss induction until you are confident that you are truly post-term. This is because the drugs used for labor induction do carry some risks. They can cause abnormal contractions, which can adversely affect the babys oxygen intake and heart rate, and can increase the likelihood of post-birth hemorrhage and infection. Also, theres always the chance that the induction fails, in which case a c-section will likely be the next step.

    In the case of true post-term cases, the benefits generally outweigh risks, but its important to be aware of this cost-benefit assessment.

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    Can Any Medication Or Medical Conditions Affect The Result

    Always read manufacturers instructions for any medication you are taking before doing a test.

    • Fertility drugs containing hCG can give misleading results .
    • Other fertility therapies, painkillers and hormonal contraceptives should not affect the result.
    • If you have recently stopped using hormonal contraception or are using fertility therapies, your periods may be irregular, leading you to test too soon.
    • Ectopic pregnancy, ovarian cysts, menopause and some very rare medical conditions can give misleading results.

    If you do get unexpected results you should discuss them with your doctor.

    Actual Length Of Pregnancy

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    The actual length of pregnancy varies significantly among women. Just 4% of babies are born on their estimated due date, while 70% are born within ten days. The remaining 30% are born more than ten days before the due date or more than ten days after.

    The reference above provides a delivery birth range of 38 weeks and four days to 41 weeks and three days with a probability of 70%.

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    Sex At Week 5 Of Pregnancy

    Its safe for you to have sex at any stage during your pregnancy. Some women experience an increased sex-drive around this stage. But keep in mind that symptoms like morning sickness can put you off sex when youre around 5 weeks pregnant, which is normal.

    Some women can spot lightly after having sex. This happens because your cervix has become more tender and vascularized. Unless the spotting doesnt stop, theres nothing to worry about.

    • Take a pregnancy test after missing your period.
    • Make your first antenatal appointment with your doctor.
    • Start taking a prenatal vitamin.
    • Develop healthier eating and exercise habits.
    • Drink plenty of water.
    • Listen to your body for cues and rest as much as you need.
    • Start a pregnancy journal this will help you remember every detail in the years to come!

    Why Is The Ultrasound Method So Useful In Calculating How Many Weeks Pregnant You Are

    Healthy embryos grow at a very predictable rate in the first trimester, so the crown to rump measurement can provide a more accurate estimate as to how many weeks pregnant you are. Crown to rump refers to the distance between the head to the end of babys bottom . When dating ultrasounds are done before the 13th week of pregnancy, their accuracy is +/- five to seven days. In the second trimester that jumps up to +/- seven to 10 days.

    The above image depicts an early ultrasound used for dating purposes.

    If you get an official due date from your dating ultrasound, you can use our reverse due date calculator to see when you likely conceived, then youll have a much better answer forhow many weeks pregnant am I.

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