First Day Of Last Period How Far Along Am I

How Do I Know How Many Weeks Pregnant I Am

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While you may be unable to pinpoint how long youve been pregnant right away, thats not the end of the story. There are several ways to determine how far along you are. The good news is that not all of them necessitate a trip to the doctor at least, not right away. Heres what you can do to discover how long youve been pregnant.

I Know My Lmp Do I Need A Dating Ultrasound

Nope! You can rely on the due date suggested by your last menstrual period, but your healthcare provider may schedule one anyway. Your doctor may do it for other reasons, but for figuring out dates, its really not necessary if she isnt concerned and theres nothing odd happening, says Scurfield.

My Cycle Isnt 28 Days Will This Due Date Calculator Work For Me

Yes. The logic behind our pregnancy calculator works as follows:

  • The average cycle length is 28 days
  • If your cycle length is shorter, your due date will be earlier
  • For every day your cycle is shorter, your due date moves one day earlier
  • Similarly, if your cycle is longer, your due date will be later
  • For every day your cycle is longer, your due date moves one day later
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    How Accurate Is This Pregnancy Calculator

    It is important to remember that this pregnancy calculator is meant to be a bit of fun and the results contain guesswork . Assuming it will be born naturally, theres obviously no way of knowing for certain when your baby will arrive. It is worth noting that only 5-7% of babies arrive on their due date. The vast majority are born two weeks either side. This calculator, as with all due date calculators, should be used only as a guide, to give you a little help with planning for your babys arrival.

    At the point of 42 weeks, births are commonly considered post-term. If you reach this point, your hospital will likely induce labour for the safety of the baby. You can learn more about this and about due dates in this article by the Essential Parent website .

    Determining If Labor Is Premature

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    Babies who are born too early are at risk for numerous health problems. There are steps we can take to slow or halt preterm labor. With that said, there are also risks to the medications used to stop preterm labor, both to the mother and the baby.

    You and your doctor have to decide together when the risks of allowing labor to continue to outweigh the risks of intervention. This is partially determined by knowing which week of pregnancy you are in.

    There are also risks to the baby and mother if a pregnancy goes on for too long. Post-term pregnancy is when birth does not occur by week 42 . If this happens, your midwife or doctor may decide to induce labor.

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    How Are Due Dates Calculated

    If you were having regular periods before pregnancy, your doctor will calculate your due date based off of your last menstrual period. This goes back to the fact that in order to get pregnant, your body ovulatedor released an eggroughly in the middle of your cycle and it was fertilized by sperm. That was the moment of conception.

    To clarify, the gestational period of 40 weeks actually starts with the first day of your last period, which adds two weeks of time to the gestational period when your baby didnt even exist yetclear as mud, right?Is an ultrasound a more accurate way of finding out my due date?If you are having irregular cycles before getting pregnant, an ultrasound is usually done to find out how far along you are. An ultrasound is actually the most accurate way to date a pregnancy because all fetuses grow at a consistent rate during the first trimester and early second.

    In other words, if your baby measures 9 weeks 2 days when you have your ultrasound, thats how far along you are, no matter when your last period was. Some women with regular cycles are confused about why their ultrasound due date doesnt match up with their last menstrual period due date. Ovulation isnt a perfect science and can happen earlier or later than the norm, which might shift your due date slightly.

    How Can I Calculate Important Week

    This pregnancy calculator helps you find out exactly how many weeks pregnant you are right now, details your babys development, and precisely what is happening to your body at the moment. Just enter your pregnancy due date or other information to create and calculate a personalized weekly and daily pregnancy calendar. The babyMed Monthly Pregnancy Calculator and Calendar is a week-by-week pregnancy calculator and calendar with information for each day of your pregnancy.

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    Role Of Fundal Height

    Your midwife or doctor may measure your fundal height at your pregnancy well-checks. The fundal height is the measurement in centimeters from your pubic bone to the top of your uterus. It should grow at a predictable rate as your pregnancy continues.

    After 20 weeks, your fundal height in centimeters will typically be the same as the number of weeks you are pregnant. In other words, at 21 weeks pregnant, your fundal height should be around 21 centimeters .

    Sometimes, the fundal height won’t match perfectly. Slight variations are normal, but if you are measuring much smaller or larger than expected, your medical care provider may want to investigate with another ultrasound.

    While useful, the fundal height is not an accurate measurement of gestational age and would not affect the estimated due date.

    Why Pregnancy Is Counted From The Last Menstrual Period

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    Pregnancy is counted from a women’s last menstrual period because the start of a period is easily observable and usually known to a woman whereas the date of conception is much less likely to be known.

    Historically, the first day of the last menstrual period became the date from which pregnancy is counted even though conception occurs about two weeks later.

    The LMP formula is good for working out an initial age of pregnancy but ultrasound is more accurate. The age of pregnancy may be revised following your ultrasound scan.

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    How Are The Weeks Of Pregnancy Calculated

    The 40 weeks of pregnancy begin on the first day of your last menstrual period.

    This can be a little confusing because, for most people, conception doesnt occur until day 14 of the menstrual cycle. So yes, you arent actually pregnant during those first two weeks of pregnancy.

    Modern data suggests that women have their babies a few days after their due date on average. Studies like this one found that Naegeles rule consistently places the due date about 2-4 days too early. So a better estimate may be 40 weeks and 3 days from LMP.

    Alternatively, you can use our Advanced Due Date Calculator, which uses the Mittendorf-Williams rule to calculate your due date, which has been shown to be more accurate.

    How Far Along Am I Based On Last Period

    Your egg travels down your fallopian tube , waiting for a single sperm to fertilize it.

    The lucky sperm makes its way into the fallopian tube and burrows into the egg, fertilizing it. Once fertilized, the egg changes its lining to prevent other sperm from entering the egg.

    Instantly upon fertilization, your babys sex and genes are determined.

    The sperm decides whether the baby will be a boy or a girl: if the sperm has a Y chromosome, your baby will be a boy while if it carries an X chromosome, your baby will be a girl.

    So, if you were hoping for different sex, talk to the father!

    Once fertilized, the egg starts to divide from one cell to many cells.

    It continues to divide as it moves slowly from the fallopian tube into the uterus, where it is looking for a home. Below is a microscopic image of the egg roughly 24 hours after fertilization.

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    What If I Dont Know The Date Of My Last Menstrual Period

    This is more common than youd think. Luckily, there are ways to figure out your due date when you cant remember the first day of your LMP:

    • If you know you had your LMP during a particular week, your doctor can estimate your due date accordingly.
    • If you have no idea when your last period was, your doctor may order an ultrasound to determine your due date.

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    Use An Online Due Date Calculator

    Week: 17

    If youve just discovered youre pregnant and want to know how many weeks pregnant you are you can use an online tool to figure it out. You will need to know the start date of your last regular period and have a rough idea of how long your average cycle is.

    If youre using this online due date calculator, youll put in the calculation method , the start date of your last period , and input your cycle length.

    So, for instance, if your average cycle is 28 days, and the first day of your last regular period was May 18, 2022, youll be told that youre 5 weeks pregnant if your cycle is about 21 days, youll be told youre 6 weeks pregnant. If you dont know how long your average cycle is, the calculator will average it out for a more exact number, get an ultrasound done.

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    What Exactly Is The Date Of Conception

    The date of conception is the day that the egg and sperm meet.

    Women who track their ovulation may know their exact date of conception. But for many women, date of conception can be tricky to pinpoint.

    Sperm can live in a womans body for up to five days, and the ovum can live for up to 24 hours after being released. In other words, you have a six-day window where you could potentially get pregnant each month.

    Do you already know your due date but want to know when you likely conceived? Try our reverse due date calculator.

    How To Know When You Conceived

    In general, women can only conceive when they are ovulating that is, when their ovaries release a new egg into their fallopian tubes for fertilization. Ovulation usually occurs about two weeks after your menstrual period and lasts for two or three days.

    However, not all women have the same cycles of menstruation and ovulation. Some womens menstrual cycles are irregular. Others have ovulation periods closer to or further from their menstrual period. Some women simply arent sure when their last period was. In other words, calculating conception based just on your body cycles can be difficult.

    You can also simply try to determine the last time you had sexual intercourse, but this method isnt totally accurate either. Conception is a process and takes time, and a mans sperm can actually stay alive inside your body for up to a week after sex. All of these factors can make it hard to know when exactly you conceived.

    This is why a pregnancy confirmation ultrasound is the best way to know how far along your pregnancy is and to determine when you conceived. Pregnancy ultrasounds look directly at the development of your growing baby to determine its age and when you likely conceived. This method is much more accurate than date-based calculation.

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    Average Length Of Pregnancy

    While 40 weeks is the average, its not unusual to deliver your baby earlier or later. In the past, 37 weeks was considered to be a full-term pregnancy. This definition impacted when it was considered safe to induce labor or schedule a cesarean section.

    However, we now know that being born at 37 weeks can increase health risks. Its not nearly as risky as being born before 37 weeks, but it’s not ideal. Research shows its typically better for a baby to stay in the uterus a few weeks longer to at least 39 weeks, if possible.

    In response, the American College of Obstetricians and Gynecologists has created new definitions to describe the timing of labor:

    How Can I Calculate How Far Along I Am And My Due Date

    When can my baby’s due date be determined?

    If you know the date of the first day of your last menstrual period, or the date of conception, the easiest way to get an estimate of how far along you are is by using the Pampers due date calculator.

    Get ready for your babys arrival by finding out your estimated due date.

    Choose your method:

    Tell us a bit more:

    Pick up your cycle length

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    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.

    What Is Gestational Age Can It Be Different Than What The Calculator Shows

    Gestational age is the term used to describe how far along the pregnancy is and how long baby has been gestating .

    If you get an ultrasound you may notice a GA on the image with a number of weeks and days. This figure is based on how the baby is measuring, not on your LMP, which the due date calculator uses.

    Its normal for these dates to not match up perfectly. If there are significant differences in the dates, your doctor may want to dig deeper to determine conception date. As a result, your midwife or doctor may change your due date based on the ultrasound gestational age.

    Early ultrasounds are very accurate when dating a pregnancy and can be helpful if you dont know your LMP or your periods are irregular.

    Note that you dont have to have an early ultrasound, especially if you are fairly certain of your cycle length and conception window. This study shows that early dating ultrasounds dont change the incidence of induction.

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    When Is My Babys Due Date

    So you got your positive pregnancy test, youre feeling some early signs of pregnancy, and now youre wondering, when is my babys due date? Weve got you covered with the Mama Natural due date calculator!

    Enter your information in the due date calculator above and discover the best estimate for when your little bundle of joy will make his or her appearance.

    How To Calculate In Months

    Pregnancy: 18 Weeks #2

    To determine how far along you are, you can reference our table below

    9 months

    37 to 42 weeks of pregnancy

    Usually a pregnancy lasts 40 weeks, but the baby can be born between 39 and 41 weeks without any problems. If labor does not start spontaneously until the 41-week mark, the doctor may choose to induce labor with IV oxytocin.

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    Sex At Week 37 Of Pregnancy

    Sex at 37 weeks is perfectly fine for most pregnancies. Unless told otherwise by your doctor, you and your partner can continue to be intimate until your water breaks or youre rushing to the hospital due to real labor contractions.

    Youll definitely want to experiment with different positions if your go-to is missionary. For example spooning . At 37 weeks, there can be too much pressure on your belly. Also, it isnt a good idea to lie flat on your back for too long because it can compromise blood flow to the large blood vessels behind the uterus.

    Another thing you may experience after having sex at 37 weeks is spotting. Your cervix is very tender now, and theres a lot more blood flow in that area than usual, so you may get irritated pretty quickly. A little blood is usually not a cause for concern.

    Feeling antsy? Week 37 is the perfect time to prepare mentally and physically for babys arrival. Here are some things you can do each day of week 37 to better prepare yourself for D-day.

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    The Best Estimated Due Date Calculator Is Your Obstetrician

    If youre looking for assistance in navigating your pregnancy and need advice as to how to prepare for your due date, ask a professional obstetrician to get all your answers.

    Dr Caroline Hoggenmueller is an experienced obstetrician in Melbourne who can advise on all aspects of your pregnancy from general obstetric care to fibroid removal. Shes delivered over 2,000 babies and counting, while well-versed on estimating the due date of your pregnancy.

    Book your appointment with Dr Caroline in her Heidelberg and Bundoora rooms and get an appointment this week. She offers 24/7 one-stop pregnancy care, allowing you to avoid months of waiting lists for the advice you need immediately.

    • Born Specialist Group, NorthPark Private Suite 10, Plenty Road Consulting Suites 135 Plenty Road, Bundoora 3083
    • Born Specialist Group, Mercy for Women Private Consulting Rooms, Level 6 Mercy Hospital for Women, Heidelberg 3084


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    Calculate Using A Pregnancy Test With Weeks Indicator

    All pregnancy tests are designed to detect the pregnancy hormone human chorionic gonadotropin in urine, but some pricier tests offer a weeks indicator that promises to tell how far along you are. Unfortunately, these tests are pretty vague, stating only one to two weeks, two to three weeks or three-plus weeks pregnant. In addition, the tests measure from implantation, not from your LMP. A test might say that youre one to two weeks pregnant but youre actually four weeks pregnant, according to standard pregnancy calculations.

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