None: Only 100% safe sex is no sex. If you are talking about stds, the timing makes no real difference in std transmission; if you are talking about pregnancy, your most fertile period is the week leading up to ovulation. However, rhythm method is far inferior to actual protection (either hormone (pill) or barrier (condom)).
Answered 12/10/2012
5.4k views
Unprotected, never: Without contraception, there is no safe non at risk for pregnancy time to have sex.
Answered 12/10/2012
5.4k views
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