so there's this adult video store in my neighborhood where you can pay to go upstairs and there's a bunch of booths with tv's inside and also gloryholes. anyway i've been once and i just jerked off in a booth and left; but today i (19M, straight but down bad) went there with the intention to leave with a BJ. so i go and there's a lot of guys in there and i get in a booth and like 10 seconds later someone goes into the booth next door and i stick my dick through and begin sucking, i was looking at pictures of my friends nudes on my phone and then they stop. a few seconds later i felt what i thought was a mouth but it felt a lot tighter, different, and then i felt the thin wall move towards me, and back and again. i soon realized my dick was in someone's ass. it was an interesting feeling for me for a couple of reasons; firstly i am a virgin, secondly i am not gay, simply straight curious and was just really horny today, and thirdly they didn't finish me. after a minute they just walked away. someone else came in and sucked me off until i came; ig it was good? Idk. is this common practice at gloryholes? should i get tested? is anal considered towards my virginity? now that it's said and done i wish he would've stayed for longer because i didn't even get to process what even was happening and i don't know how to feel. advice and comments are welcome.