Advice wanted !! (Please don’t be rude )

Hi I’m a college freshman. Recently I’ve been talking to this guy and he’s been coming to me see a lot at my dorm room. At first it was really sweet like I would help him with his homework and we would watch movies and stuff like that. Last Monday though, which was a week after us hanging out for pretty much everyday, it escalated and we ended up almost having sex. I told him I wasn’t ready for it prior ( I have terrible anxiety and will always get scared I’m pregnant even though I use condoms plus pill AND I get attached after opening my body up). So I pushed him out after he put it in. After that, we have been talking some but not much and he would always show up a couple hours late to my room than we originally planned. Saturday he came over after I said I was sleep and everything. After an hour of him coming over and me trying to sleep he tried to have sex with me again. Everytime I said no he would ask why or say I’m being stingy for no reason. I told him I simply wasn’t trying to get hurt and deal with my anxiety. He kept pestering me so I got mad and told him to leave. But he apologized , stayed , and cuddled me until we fell asleep. My question is , do you think that sex is all he wants ? What should I do? I get so anxious about the thought of getting pregnant from simply what we did that I literally feel sick every single day. But I really like him.