Me and my boyfriend are sexually active and are extremely careful with using contraceptives. He wears a condom every time, and makes sure to pull out before he cums. Also I should add, I am extremely irregular with my periods. I might have PCOS because my moms side of the family has a strong history of it, she also has it. I had my period May 28th-June 4th .There was one instance where the condom slipped off so I used plan b 6 hours later. I got my period again off of the pill. During that period we had sex again and the condom also slipped off but he didn't cum at all. I'm always paranoid about these things cause I don't want to get pregnant.