The rules: Even one sperm can cause pregnancy. If inside the vagina pregnancy risk is real. If outside the vagina no pregnancy risk.
Answered 8/15/2014
3.8k views
Unlikely but possible: Sperm are very hardy. Although it only takes one to actually impregnate it usually takes a whole lot to make it to and through to the egg.
Answered 8/14/2014
3.8k views
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