hiv anxiety - drunken anal sex?

48 days ago, I was at a gay night club and blacked out.  I only remember parts of the rest of the night after I left the club. I have a brief memory of meeting a random guy on the street and holding hands with him (don't know who he is or his contact information). I remember suggesting that we go to a gay night club (but he said that it was closed since it was already 4am). I have a brief memory of walking into his apartment building and into his apartment. Then I have a brief memory of him walking into his bedroom. The next memory I have is of him telling me that I can leave his apartment if I wanted to. These are the only memories I have from his apartment, and they are literally 1-2 second snapshots. The next memory I have is of me drunkenly looking for and finding a familiar restaurant to see if a friend (that I had met there once before) was there.

After 23 days from that night, I developed a throat ache and my throat became scratchy (especially when the weather is brisk). I didn't have a fever, but felt cold, fatigued and weak. I developed a headache that lasted approx 3 weeks. (although the headache began as I was landing during a flight). I am experience diarrhea. Most worryingly, I feel weak and my body has constant mild tremors which become pronounced and visible when I work out.

I don't have any memory of having anal sex, but I was also very drunk and can't piece together all my actions.  I did not have any lube or anything messy on my anus/penis the next day, and I did not feel anal pain (although I did take a weird and messy excrement). (In my life, I've tried anal sex only once, but it hurt so bad after just one thrust that I stopped it immediately). If I had bottomed on this drunken night, would I have felt it the next morning? The kind folks on the HIV Prevention forum said that I would have either 1) had a glimmer of recollection of anal sex, and/or 2) would have had pain the next day from anal sex. I thought I was able to make peace with this, but my constant tremor and [muscle?] fatigue is making me wonder: is it 1) possible, and 2) likely that I had anal sex but just did not remembered it, and was simply not in pain the morning?

I appreciate your thoughts and advice.

[Apollo1971]

If you had an anal sex you would have known about it for sure, so on that basis you have nothing to worry about. Your concern is nothing more that paranoia buds.