Just wondering what other people do. Do you go by when your LMP was for a DD or an early ultrasound if you had one?

If it differed by about 3-3 1/2 weeks, would you think that's possible?

U/S's are far more accurate.

If it's that different I would go by ultrasound! If it's only a few days then I would go by LMP. I voted before I read it sorry. So I would change my vote in this case.

Quoting Queen leaky tits:" U/S's are far more accurate."

this!!!! My due date actually changed because of my "20 week ultrasound" Audrianna was 3 weeks behind which added up to when I got my BFP. I wish they would have done an early ultrasound.

If the ultrasound is earlier than 10 weeks you would definitely go by that. Your lmp is typically un reliable because you can always ovulated early or late in your cycle

U/S. In my last two pregnancies my EDD based on my U/S was 2 - 3 weeks off from my LMP because of my long cycles.

I went by lmp.
I had an ultrasound when I was 7 weeks 1 day but the ultrasound said 6 weeks 5 days according to the size of the baby.
My doc told me to just keep my original due date becasue I know I didn't get pregnant 3 days later because I didnt have sex at that time and also 3 days is such a tiny frame of time that it wouldn't make much of a difference.
dd ended up coming a week early anyway.