Relations every 36 and 48 hours bracketing around ovulation is probably ideal.
Relations every 36 and 48 hours bracketing around ovulation is probably ideal.
排卵期前后36到48小时进行房事是个好注意。
Relations every 36 and 48 hours bracketing around ovulation is probably ideal.
排卵期前后36到48小时进行房事是个好注意。