I don't know what to do...

Okay so I lost my virginity Sunday to a guy I had only known for a few days and I didn't do it intentionally but I just felt so safe with him and it felt so right that I didn't even stop to think. We didn't use anything at all for protection and I'm not on birth control, even after expressing my concerns he refused to use condoms and we've been having unprotected sex. I left him today because he started to get extremely controlling and was telling me he loved me after being together officially for only 1 week. Also during sex he was so rough that I have black and blue bruises all over my body that hurt and a bruise from where he choked me so hard that I had to pull away to breathe. I never told him he was hurting me but I thought I was being a baby to the pain so instead to get him to stop what he was doing I would offer something else. I don't know what to do because I honestly care for him but I'm afraid that if he's doing this after only a week what he will do later on.