Sorta kinda. I was at a small house party, drank more than I ever had in my life (teenage angst and all). I passed out in the livingroom to get woken up by one of the guys I had met earlier that night... and I was covered in my vomit. We actually hit it off I thought as friends (before I passed out obviously). I was in the closet at the time.
Anyway, he woke me up and wanted to give me a BJ. I insisted I didn't want one and was "straight," he kept insisting, and it ended up me getting a BJ (my first gay experience incidently).
Yea, I felt pretty trashy and gross the next day... and had a wicked hangover that lasted a few days after. Time took care of it. After a week I let it go, and moved on. Did he take advantage of me? Prolly. Did I want him to? Yea.
But regardless, what's done is done. So it's one of those things that happens, and in a few days those feelings will probably subside. Not sure what else to tell you.
Drunken sex has never worked in my favor I can say that
Also if it was unprotected, part of your unease might be the risk factors. Getting tested would ease a lot of those feelings I bet too. And learning from the lesson life just gave you.