so i lost my virginity at the beginning of last month, and was sexually active for about a month afterwards. i at around day 21 of my missed period, i took two first response tests, one each way. (one by peeing onto the stick, the other by dipping the stick in pee) both tests came back negative, no traces of a line at all and i even checked them in several different lightings to make sure i wasn’t missing them, so i feel pretty confident that i’m not pregnant. truthfully, i’m really not so worried about the fact that it’s late since i am no longer sexually active and haven’t had sex since i took those tests, so i feel confident that i am not pregnant. i’m just wondering, why else could my period be late? is it normal for your period to act up following losing your virginity? did yours?