A member asked:

Ultrasound done at 6 and 7 weeks. at 7 weeks ob saw heartbeat and said to count back 5 weeks to figure out conception date. is this correct?

A doctor has provided 1 answer
Dr. Gerard Honore answered

Specializes in Fertility Medicine

Yes this is correct.: It is an approximation, but should be close to the conception date, say /- 3 or 4 days. Caution: it absolutely will not discriminate between 1 or 2 days apart.

Answered 10/4/2016

4.4k views

Thank

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