A member asked:

Lmp on 10/1/12. 1st us on 11/24/12- 8 weeks, 2nd us on 12/24 put me 12.6 weeks howevr i was 12 wks, is there any chance that i had conceived on 9/25/12.

A doctor has provided 1 answer
Dr. Creighton Likes answered

Specializes in Reproductive Endocrinology and Infertility

First scan: If you have an early ultrasound, which you did at 8 weeks, you will go with that one for your dating. As the pregnancy progresses, there is more variation in the measurements on ultrasound in regard to dating the pregnancy.

Answered 12/31/2014

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Lmp was 6/6 could i hv conceived on 6/22?

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