A member asked:

If i had intercourse with two different ppl 16 days apart can a 9 week us be reliable to determine the father?

3 doctors weighed in across 2 answers
Dr. Robert Killian answered

Specializes in General Practice

Conception: Yes. And you have all the tools you need on the web to figure this out. Look for a conception calculator to help.

Answered 4/24/2014

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US dating: Ultrasound is one way to date your pregnancy, but it is not going to be good enough to determine paternity based on the time of intercourse. You will have to wait for a genetic paternity test after the baby is born.

Answered 4/24/2014

4.2k views

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