Idk what to do help

Omg so my bf slept over the other night and we had sex couple times and he ended up cumming inside of me like 3 times and I'm really scared cause I didn't take plan b or anything and i don't know what to do !! Should I wait it out and see what happen or is that dumb omg I've never been through this 🙈🙈🙈😅😁 any advice would be great rn cause I'm not trying to get pregnant .