If you're 100% positive about ovulation, then it will do no good to continue having sex for multiple days afterwards. The egg only lives 24 hours after ovulation. If it's not fertilized in that time frame, you're not going to get pregnant. This is why your body creates a fluid in the days before ovulation that allows sperm to survive several days, rather than hours. Another reason sex after ovulation is fairly ineffective is that for most women their fertile fluid dries up within hours of ovulation and her body quickly reverts to an infertile state. Without the fertile fluid, the sperm will die within hours; those that don't will have to fight their way through a closed cervix.
at 10:01 AM on Jun. 29, 2010