my boyfriend and i had sex and he pulled out but does not think that he pulled out in time, there was stuff on the sheets but he thought not enough, i went and got plan b the next day cause it was to late to get it that night, i took it 14 hours after the incident, now i had just ended my peroid like 2 days before this happened, and a week later i started bleeding lightly but it only lasted 3 days, then it stopped is this normal??