too freaky

alright here goes. i just finished my first week of college so i was ready to experiment. well i did, and last night i had a foursome with 3 girls and 1 guy. and it was fucking awesome but i'm not bi i'm straight and i now know that. so at the end the guy fingered me and i ended up squirting everywhere and i've never done that before. does that mean i had an orgasm?? i've only ever had one from my clit so i don't know about ones from penetration. also there was one point where i actually had to have him stop and idk why. like it was feeling good but i made it stop, does anyone know why??