So this happened..

My boyfriend and I have been going out for a little while now, and tonight, we started making out pretty heavily, and he asks if he could stick it in. Now normally, I tell him no, because he didnt use a condom and I havent been on my birth control in a couple years. I kept telling him to tell me when he was about to come. He pushed me off and I just went to giving him a bj, and inserted his fingers in me pretty hard for a little bit, about 5 or so minutes until he came in my mouth. I'm still a little worried I might get pregnant though. Anyone else have this happen/feel this way?