No condom

So there’s this guy that I’ve been seeing for the last 4 months and yes of course we’ve had sex. Tbh this guy was the first guy I’ve ever had sex with, without using a condom. When we do have sex he pulls out every time, plus I’m on birth control. I’m 20 years old and slightly paranoid that I’m pregnant but there is no signs pointing towards yes. I got off my period about a week ago. Would there be any possibility that I could be pregnant? He and I have been having sex a few times a week and I don’t know what I should do.