I had unprotected sex with someone march 25 got back with my boyfriend march 27 and had unprotected sex until I got my period march 30 but I'm not sure if it was a period or implantation it was heavy I think . It lasted 6 days I went to the the hospital may 14 they made me pee and take blood and told me I was about 5 weeks pregnant is it my bf or guy a. And if I was five weeks wouldn't it make it my boyfriends