I let something happen to myself (m22) and I don’t know what to do next (was it SA?)

I just need more perspectives but apologies if this isn’t the place.

Drinking and sexual encounter described within.

This weekend, while sober, I posted an ad for a guy to come over and do stuff with me while hoping to see if my sexual fantasies were correct or if I was straight. Between posting and coming home, I went to a party and got so blackout drunk I vomited all over my clothes and don’t even remember coming home in the Uber or if I said bye to anyone. That said, once I was home I was functional enough to say to the guy that came over to come over, whereas I told another guy I wasn’t drunk enough to give consent. When I drink I’m still pretty sound of mind, but my head was racing and spinning when he came. The guy did pretty much what I asked him to, aside from trying to put fingers in me, but stopped when I told him to I think. We didn’t have sex or kiss, since I told him not to, but it still feels dirty. During the whole thing I knew it wasn’t for me, and wished it never happened. Since then I’ve only felt worse. I can’t really blame him since I invited the whole thing, but I regret it so much and can barely eat, have been using the bathroom nonstop, and feel incredibly low. I posted and asked for it, and at no point did I tell him to stop or convey I wasn’t sound of mind, so I think it feels like an assault to me, but isn’t. After the fact I still was able to make sure my anonymity was protected, the guy got back, I asked about STI’s, but I think If I was sober I would have not let him come over. I’m not sure if it’s SA, so my apologies for posting, but I needed to get it out there. Thank you.