i was always told you were fertile 2 weeks after the start of your menstral cycle. so basically if your period last a week you would be fertile a week after you ended your period. if you calculate that 2 weeks before your period that would be somewhere near your fertile time i think. might want to take a test. is it late? it all depends in girls. so girls get their period a couple of times before they realize they are pregnant and some girls periods stop right away.
i took a test for my ex and it was negative. i just had sex with my bf so it would be too soon so if i do end up pregs it will be his. now i just have to wait.