My boyfriend and I was kissing and he start fingering me. I get on his lap and I start jacking him off. He put on a condom and he start fingering me again. We are about to have sex but I change my mind and I get off his lap and stand up. I start jack him off again till he cum. But now my period is five days. But when was doing this with him I was already two days late. I was wondering, what could make my period late?? And I am not on birth control and know I am not pregnant(because not cum got on me ). But I want to know why I am late??