You are thinking of the rhythm method, that has nothing to do with fertility awareness, which is finding out for sure when ovulation is occurring, not guessing

You are thinking of the rhythm method, that has nothing to do with fertility awareness, which is finding out for sure when ovulation is occurring, not guessing based on dates. Fertility awareness is more reliable than condoms, but nobody goes around acting like condoms are not a reasonable option: https://en.wikipedia.org/wiki/Comparison_of_birth_control_methods https://en.wikipedia.org/wiki/Comparison_of_birth_control_me...