i just lost my virginity help

i (f17... uh oh!) have been talkinggggg to this guy from my school for the past week and he got off work and i dont know what i was thinking but i joked he should come over and he DID. we were making out and then he got in my bed and we just had sex idk and it was unprotected and he didnt come but like idk what do i do!? im actually terrified.

UPDATE!!!!!

i told my mom and we went and bought plan b, im gonna take it and do a pregnancy test in a couple of weeks and we are talking about getting me on birth control