Does he like me or fwb?

So I stayed in the barracks last night with this guy. I met him once before last night well I had no intentions of sleeping with him but we did. I feel bad. It did get rid of the bad memories of my ex. This guy is 23 I'm 19 on Wednesday. He says he likes me and wants to date but he isn't rushing into anything, but yet we had sex. It was amazing sex though. I'm in my fertile window so we didn't have a condom... We did it without but I made him stop then he played with himself till he finished yet I'm still worried I could get pregnant somehow. 🙄😔