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Doctor insights on: Pregnancy Due Date

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How is the pregnancy due date calculated?

How is the pregnancy due date calculated?

40 weeks from LMP: The convention is calculating 40 complete weeks from the last normal mentrual period. For assisted conception by any method there are small modifications, but they don't change the basic rule. With uncertain/unknown lmp, dating is estimated by ultrasound measurement of fetal parts and pregnancy structures, but if this agrees within 1 week to lmp, then menstrual dating is still used. ...Read more

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Dr. James Lin
4 doctors shared insights

Pregnancy (Definition)

When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to ...Read more


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How can I prepare for my pregnancy due date?

How can I prepare for my pregnancy due date?

There's a huge ..: To Do list! First, continue taking care of yourself: keep all doctor appointments, breathe deeply, take naps, stretch, line up help. For baby: keep track of movements, prepare for breastfeeding, assemble baby gear/room, wash newborn clothes. For delivery: learn about coping with pain/stages of labor, pack bag, Together: pick out your baby names! Get ready for the ride of your life! Best wishes! ...Read more

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What is a healthy amount of weight to gain as I approach my pregnancy due date?

What is a healthy amount of weight to gain as I approach my pregnancy due date?

20-30# total: Most experts say 20-25 or 25-30 # is ideal weight gain for a woman of healthyl weight with a single fetus throughout the pregnancy. This weight includes the fetus, the placenta, the amniotic fluid, the increased maternal blood volume of breast enlargement and some increased body fat. Most of the weight gain in the last few weeks is baby weight of up to 1/2# per week plus some fluid retention. ...Read more

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Is a womans pregnancy due date the same day she has sexual intercourse 9 months earlier? Weird question I know, but just curious.

Is a womans pregnancy due date the same day she has sexual intercourse 9 months earlier? Weird question I know, but just curious.

No, not quite: The counting of "weeks of pregnancy" or "gestational age" is standardized so that all doctors, nurses, and patients can talk about it the same way. The start date of a pregnancy is the first day of the menstrual period just before the pregnancy. That means ovulation & fertilization happen about 2 weeks after the start date of "the pregnancy". When intercourse happens doesn't affect the start date. ...Read more

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Can you have sex if you are 2 days past your pregnancy due date and have lost your mucus plug?

Can you have sex if you are 2 days past your pregnancy due date and have lost your mucus plug?

Sure, unless OB orde: If your obstetrician has not forbidden intercourse, then the answer is yes. Please avoid high-risk contact (i.e. Orogenital, anogenital) as that can cause infectious and/or severe perinatal complications. If your dates are confirmed by a first trimester sonogram, then delivery tomorrow would be a good idea. Talk to your obstetrician and best of luck! ...Read more

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How accurate is a transabdominal ultrasound done at 13 weeks pregnancy? Due date given was june 16th 2013 so when did i conceive?

How accurate is a transabdominal ultrasound done at 13 weeks pregnancy? Due date given was june 16th 2013 so when did i conceive?

11 weeks before: If the scan said you were 13 weeks that day, then 11 weeks before that day in general would be time of conception. ...Read more

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How many week in a pregnancy till due date?

How many week in a pregnancy till due date?

40 weeks: Pregnancy is typically 40 weeks plus or minus 2 weeks. Keep in mind, this calculation starts from the first day of your last menstrual cycle, that is once you miss your cycle, you are already 4 weeks pregnant. ...Read more

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My due date is oct 2...but when im 9 months ill be sep4th why is that?my 1st pregnancy my due date was july 6 but had baby july 1st only 5 days off.

My due date is oct 2...but when im 9 months ill be sep4th why is that?my 1st pregnancy my due date was july 6 but had baby july 1st only 5 days off.

Dating confusion...: The dating of pregnancy can be confusing. Full-term Pregnancy lasts for about 280 days or 40 weeks. If you get out a calendar and count 40 weeks, you will discover that some months (like December) have 5 weeks and some have 4. Saying pregnancy lasts 9 months is an approximation. To be precise, you need to use days or weeks, not months. Still 1 month is quite a difference. Best ask your doc ...Read more

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Sex march 5th took plan b, is my pregnancy with due date january 15th be from that date?

Sex march 5th took plan b, is my pregnancy with due date january 15th be from that date?

No: With a due date of january 15, date of conception would be around april 24. It sounds like you got pregnant after using the Plan B in the following cycle. ...Read more

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