Those details of your sexual exposures are reassuring and your symptoms are more like the physical manifestations of anxiety or depression than HIV infection. Regardless of the result of your HIV test, have them evaluated by a health care provider.
Thank you very much for the response. Just to clarify a few things:
Yes, "into me," meant anal insertion and it was very brief - as soon as he did it I said to stop in which he did. At the time, I guess I thought I had adverted any concerning issues as I put a stop to it about as quickly as it started.
My lifestyle as a gay man has been very careful. I never have anal intercourse of any kind (with this one exception) without validation of HIV / STD status. My other encounters during my single life have all stopped at oral sex and even then, I usually won't go down on someone who I don't feel confident about, etc.
My symptoms over the past month and a half have been general fatigue, occasional acid reflux, sinus issues (stuffy nose, sinus pressure in head / headache), scratchy throat, my eyes look more bloodshot to me (but this could all be in my head as I never looked that closely before), occasional diarrhea. I have occasionally woken up kinda sweaty (not drenched) and there has been no fever related to this. Due to the anxiety I'm feeling, causing my sleep patterns to be completely out of whack, I often wonder if this could be causing a lot of the prolonged issues. When I go to sleep, I fall into a deep sleep, then wake up a few hrs later and don't fully go back to a deep sleep (prob because I start looping all the fear through my head).
Anyway, all in all, the most important advice you've provided is to just go and get tested to put this to bed one way or another. As I mentioned before - since the incident I described, I have been in a monogamous relationship in which we have not gone outside our relationship. Just worried my complete and utter oversight / stupidity could ruin everything I've built over the last few yrs.
Thank you again for your time & advice - its much appreciated.
Welcome to the HIV forum. I'll try to help.
The exposure was relatively low risk, especially if there was no ejaculation. (I assume that "into me" means your anus, not your mouth. If the exposure was oral, there is truly no risk.) As for your symptoms, you don't say enough for me to judge, but in general the symptoms of HIV are very nonspecific, i.e. many other conditions, mostly not serious, are equally likely.
The other side of the coin is that you apparently don't know your friend's HIV status. Have you called and asked? That would be a logical step. If he doesn't have HIV, obviously there was no risk.
Also, you're a gay man, but you say nothing about other sexual exposures other than this particular one. Depending on your sexual lifestyle, you might be at high or low risk apart from the exposure a few years ago. Even among gay men who "extremely careful" in avoiding risk sometimes catch HIV.
As for "don't know what else to do", it seems the answer is obvious: have an HIV test. Every man who has sex with other men should have a routine HIV test from time to time, like once a year or so, and this is obviously a good time to do it, since it's on your mind. If it's negative, you'll get far more relief of your anxieties than anything I can say; and if you're infected, obviously you need to know it for proper medical care. Feel free to return with a follow-up comment to let me know the result.
Good luck-- HHH, MD