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A member asked:
Can 13 days between two sex partners & early u/s tell you anything when you do know lmp?
A doctor has provided 1 answer
A good guess: Knowing LMP and when you (with whom) had sex can help narrow things. Ovulation is about day 14 on a 28 day cycle with 1st day=LMP.
Answered 8/21/2014
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