Am I 11 or 12 weeks?

Question

LMP started August 4th, so when I had my ultrasound October 13 I should have been 10 weeks but maybe was measuring 9 weeks. My due date was pushed out from May 11th to May 19th. 
My question is, because baby is measuring a week behind does that mean I’m a week “less pregnant” if that makes sense? Based on LMP I would be 12 weeks but based on due date I’m 11 weeks.
I know I ovulated on August 20th.
Which number of weeks is accurate?

Answer

Same thing happened to me! We have the same dates as well! Lol last menstrual period was August 5th. But I have longer cycles so when I went for My dating scan I measured a week behind based off ovulation. So im 11 weeks today. (Which if you have a clockwork 28 day cycle we would be 12 weeks today) it's nothing to worry about at all ! I also have a due date of May 19th 😁!!

Answer

You always go by what it shows on the first ultrasound, so 11 weeks. I have no explanation why you are measuring a week behind but I can say the same thing happened to me and she caught up around 14 weeks and started measuring 1 week ahead again. Congrats mama!

Answer

You go by the ultrasound and new due date.
LMP is used until dating scan. The dating scan is more accurate so you go by that if it differs from LMP.
Regardless of knowing your ovulation date, implantation can happen anywhere from 6-12dpo. That’s a whole week of wiggle room.
So you’d be 11 weeks.

Am I 11 or 12 weeks?

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