A 24-year-old female asked:
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i got a positive opk cd21, i had sex cd19,cd21 (without protection) cd20 (wore condom after20mins) what day of sex did got me pregnant?

2 doctor answers
Dr. Robert Kwok
33 years experience Pediatrics
Can't tell: One cannot tell which day's sperm created a pregnancy because sperm can live several days. In general, it does not matter which day because the sperm is all coming from the same husband. In those cases where there is more than one male providing the sperm, it is "too close to call" if a woman has sex with two males less than two weeks apart.
Answered on Jul 12, 2016
Dr. Natalie Hodge
26 years experience Pediatrics
Impossible to know!: From the details you have given it would be impossible to tell! You could have become pregnant from any of these interactions, the dates are simply too close together! Best of luck and hope this helps!
Answered on Nov 28, 2017

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