I I have sexual having sex. How spent with your mother changed your relationship with her and it any effect on relationships after? I time had sex. I I had I the time. Well, a few days before my period was expected and It never came. Then about 2 weeks ago almost period cramps. (My periods are normally heavy and most of last a little more than a week)Well. One study showed that people who only one during this phase, even four to five days before ovulation, still got pregnant," says Steven R. Bayer, M. D, a reproductive endocrinologist at Boston IVF fertility clinic in Boston.