2 doctors weighed in:

If due date 07/27/15 what dates I gotten pregnant ? My Dr thought I was 10 wks on 12/20/14 but actually was 8 wks. Why she switch ?

2 doctors weighed in
Dr. Douglas Lawson
Obstetrics & Gynecology
1 doctor agrees

In brief: Due date

If at 10 weeks by dates you had an ultrasound and it said 8 weeks, I would have changed your due date as well.
Your US and LMP date shouldn't vary more than 7 days if you use the LMP for due date in 1st trimester. Conception was likely around November 3. This is an estimate based on 28 day cycles, its not exact science.

In brief: Due date

If at 10 weeks by dates you had an ultrasound and it said 8 weeks, I would have changed your due date as well.
Your US and LMP date shouldn't vary more than 7 days if you use the LMP for due date in 1st trimester. Conception was likely around November 3. This is an estimate based on 28 day cycles, its not exact science.
Dr. Douglas Lawson
Dr. Douglas Lawson
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