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Which due date? MommyOf4&1Angel 20 kids; 1 angel baby; Edmond, Oklahoma 1069 posts
22nd May '13

My LMP was 12/9 which gives me a due date of 9/15. I had an ultrasound around 12-13 weeks that gave me a due date of 9/10. The MFM doctor goes by the 9/10 due date and my regular doctor goes by 9/15. I had an u/s yesterday with the MFM doc and he said the baby was measuring 9 days behind (9/19) and he was in the 19th percentile. He said the babies stomach was measuring 21.6 weeks when I should've been 24 weeks yesterday by his record. Anyways, I see my regular OB on Friday and I will ask him what date I should be going by. I'm just thinking if my due date is 9/15 then baby isn't as behind but he is still a little behind.

Squeaky McGee [13 wks] Due May 7; 2 kids; 3 angel babies; Indiana 65496 posts
22nd May '13

It doesn't really matter which date you use, as the due date is just an estimate (i.e. EDD - estimated date of delivery).

Vindictive 50 kids; Switzerland 30558 posts
22nd May '13

Was it just his stomach measuring behind? Or most of his measurements?



I would definitely ask. Especially since both doctors are going by a different date.

Mommy to munchkin 17 kids; Bandera, Texas 1229 posts
22nd May '13

With your ultrasounfd only being a few days different from you lmp dr will prob go by the lmp. My dr did even though my ultrasound put her a few days ahead. I just went with my lmp since thats what my dr went by.

mommabyrd Due August 27; 1 child; 2 angel babies; Niagara Falls, New York 115 posts
22nd May '13

I would confirm it from your doctor. I've read in several places it's best to go by the original date because the size can vary all throughout pregnancy. The first date is usually the most accurate because they are at the beginning of development.

malibu. 2 kids; Grand Rapids, Michigan 6327 posts
22nd May '13

If it were me, I'd go by my LMP EDD. Most doctors will go by that even if the baby is measuring behind or ahead.

MommyOf4&1Angel 20 kids; 1 angel baby; Edmond, Oklahoma 1069 posts
22nd May '13

All of his measurements were a little behind but his stomach was the behind the most. I know the due date is just estimated I know he probably won't be born on his due date. I'm not concerned about that I'm just concerned about him measuring behind but if they were going by the later due date he wouldn't be as behind correct?



I see a regular OB and a high risk OB once a month where I get an U/S because I had a stillbirth last pregnancy and the cause was unknown.