So i had unprotected sex with my boyfriend a few weeks ago, but a few hours after we had sex, i randomly started a 7 day period so i was almost positive i couldn't be pregnant. Well it's five days before i am supposed to start again and my nipples are hurting like CRAZY and i was just wondering if i could be pregnant?? Or is it normal for my nipples to hurt 5 days before my scheduled period? Please help.