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A member asked:

If conception date is 6-26 and you had sex with someone on the 30 and someone else before the 26 if the egg federalized the 30 wouldn't u/s show that?

A doctor has provided 1 answer

No: No. That is too close to call. This is one reason why a woman should keep different men at least 2 weeks apart, if she chooses to have sex with more than one man. Anything closer than 2 weeks is too close to call. Ultrasound dates are estimates, plus or minus one week, in natural pregnancies.

Answered 11/9/2016

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