A member asked:

Can a 8-9 week fetus measure big and be mistaken for a 12 week fetus?

A doctor has provided 1 answer

No: The difference between 8-9 weeks pregnant and 12 weeks pregnant is very different on ultrasound. At this early stage, an ultrasound measurement is accurate to within a few days of how far pregnant you are.

Answered 11/27/2017

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