Hello, I'm a 20 year old woman who has been sexually active for a couple years now. I've been on birth control for 4 years. Yesterday, I had intercourse with my boyfriend. As he is rather large, I am afraid that he might have hit something inside of me. I have had pains this evening, and it has been radiating across my ribs. It is a very nauseating pain and the only thing that seems to help is a heating pad. Do you think I could have internal bruising?