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Doctor insights on: 36 Weeks Pregnant And Measuring 40 Weeks

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Dr. Bernard Seif
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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Can a 9 week ultrasound be off 2 weeks dating conception?

Can a 9 week ultrasound be off 2 weeks dating conception?

Dating conception: Yes, most definitely. Best thing is to consult with OB and follow up with ultrasound. Ultrasound provides an estimate of fetal age. It is not an exact science. ...Read more

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9 weeks pregnant and hb and baby are measuring at 9 weeks. Gestational sac is behind in size two weeks. Should I be worried about this?

9 weeks pregnant and hb and baby are measuring at 9 weeks. Gestational sac is behind in size two weeks. Should I be worried about this?

No: I wouldn't be worried. If you have an appropriate for gestational age fetus with a heartbeat it's a GREAT sign! Congratulations! Please make sure you are taking your prenatal vitamins or at least 800mcg of Folic Acid daily. :-) ...Read more

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Ultrasound measured foetus as 6 weeks 2 days one full week after measuring 5 weeks 6 days (just sac). Heart rate 126 i think miscarriage is likely?

Ultrasound measured foetus as 6 weeks 2 days one full week after measuring 5 weeks 6 days (just sac). Heart rate 126 i think miscarriage is likely?

Not necessarily: The fetus is now off by 4 days and the accuracy of us is about 4 days. Since the other measurement was the sac and this is the fetus, the different measurement may examine it all. The sac and the fetus do not always match exactly. The heart rate is normal so likely all is well. In any event, the next scan will be very helpful. Stay positive as these results to not suggest imminent miscarriage. ...Read more

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Its normal if at 4 weeks and 2 days of pregnancy my gestational sac mesure 0,46 cm?

Its normal if at 4 weeks and 2 days of pregnancy my gestational sac mesure 0,46 cm?

MSD: Mean sac diameter (MSD) is a sonographic measurement of the gestational sac which is usually first seen at around 3 weeks after conception (5 weeks after the last menstrual period), when it measures 2-3 mm. MSD = (length + height + width)/3 Normal MSD (in mm) + 30 = days of pregnancy ...Read more

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If baby measures 10 days ahead than the LMP, then how many weeks pregnant i am? Weeks after LMP or the amount of week baby measures?

If baby measures 10 days ahead than the LMP, then how many weeks pregnant i am? Weeks after LMP or the amount of week baby measures?

Depends: In the first trimester if the LMP and US differ by 7 or more days then we usually use the US. Second trimester may be off by as much as 14 days before changing the due date and the third trimester is very inaccurate. Ask your OB or midwife what your final due date is based on comparing your US and LMP. Your final EDD or EDC will allow you to calculate your gestational age. ...Read more

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Embryo was measuring on target on ultrasound performed at 6 weeks 3 days. Now 8 days later, embryo measures 7 weeks 2 days (rather than 7 weeks 4 days) hearbeat present on both scans. Have had a previous miscarriage and two healthy births, am very worri

Embryo was measuring on target on ultrasound performed at 6 weeks 3 days. Now 8 days later, embryo measures 7 weeks 2 days (rather than 7 weeks 4 days) hearbeat present on both scans. 

Have had a previous miscarriage and two healthy births, am very worri

No need to worry: The early ultrasound exam of the embryo although fairly accurate still can measure plus or minus a few days. These measurements are small and by just placing the caliber a few tenth of a millimeter more or less will give one more or less day. The simple rule is first trimester scans can be are plus or minus 1 week off, second trimester plus or minus 2 weeks and third plus or minus 3 weeks. ...Read more

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Baby BPD measuring 4 weeks ahead, HC 3 weeks ahead, AC 2 weeks ahead and FL is just right for the date. 31 weeks pregnant Should I be worried?

Baby BPD measuring 4 weeks ahead, HC 3 weeks ahead, AC 2 weeks ahead and FL is just right for the date. 31 weeks pregnant Should I be worried?

Highly specific: We can not comment on such a highly specific case without more information. Your doctor should compare this sonogram to your previous ones to assess the growth pattern and to determine the accuracy of your stated due date. If there is concern for hydrocephalus then a referral to a perinatologist can be arranged. ...Read more

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If i am 14 weeks pregnant will my baby measure at 12 weeks or 14 weeks based on ultrasound.

If i am 14 weeks pregnant will my baby measure at 12 weeks or 14 weeks based on ultrasound.

Same thing, 14 weeks: if your pregnancy is dated correctly from your last menstrual period, and if the ultrasound is also interpreted correctly they will both say 14 weeks. You do not adjust the ultrasound for the 2 "extra" weeks from the last menstrual period. ...Read more

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Can a dating scan done at 13 weeks pregnancy be wrong by 2 weeks?

Can a dating scan done at 13 weeks pregnancy be wrong by 2 weeks?

Yes: The older the fetus, the larger the margin of error. The estimate is based on multiple factors, and is an average of indicators. This is probably a range of dates, and not really a concrete date. You really need to see all the indices. At 13 weeks, the crown-rump length can be off this much and still be within 2 standard deviations. ...Read more

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Unknown LMP but dating scan measured baby at 63.9 at 12 weeks and 5 days. Is 12 weeks and 5 days when i conceived? Edd is 8 february.

Unknown LMP but dating scan measured baby at 63.9 at 12 weeks and 5 days. Is 12 weeks and 5 days when i conceived? Edd is 8 february.

No: Generally ultrasound dating is using the gestational age, which means it is 12 weeks from your last missed period. Generally date of conception is about 2 weeks less than last period. So about 10 weeks ago. ...Read more

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Fetal no kick and movement from 2 days i m 37 weeks pregnant?

Fetal no kick and movement from 2 days i m 37 weeks pregnant?

Ob-Gyn can evaluate: A pregnant woman in the third trimester who has a noticeable drop in baby movement should not wait to call her doctor to discuss the issue. The doctor will decide if more monitoring and more evaluation is needed, to be sure that things are still ok. ...Read more

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If im 36 weeks today 02/12/14 do I count back 36 weeks to find out my conception or 34weeks?

See website: Go to http://americanpregnancy.Org/duringpregnancy/pregcalc.Html and you will get your answer! ...Read more

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Light spotting on and off last few weeks. I'm 10 weeks pregnant. 9 week ultrasound showed baby and i saw heartbeat. Should i be concerned?

Light spotting on and off last few weeks. I'm 10 weeks pregnant. 9 week ultrasound showed baby and i saw heartbeat. Should i be concerned?

Call your OB: To make sure of continued viability, and nothing in your vagina like no intercourse if u are spotting, and you should already be set up fro another us at 11 1/2 - 13 1/2 weeks which is the integrated screen us, light spotting can happen but not normal if it gets heavier or u start cramping. ...Read more

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2 weeks and 3 days pregnant?

2 weeks and 3 days pregnant?

Yes?: A pregnancy test will be positive if a woman is 2 weeks and 3 days pregnant. It would be much to early to see on an ultrasound. But a blood or even a home urine test would be positive. There can be false negatives on urine tests if a woman has been drinking a lot of water. A test will turn positive sooner if a woman is dehydrated like first thing in the morning when she gets up. ...Read more