HIV from single act of oral sex?

[aggie2011]

Doctor,
  I am a gay male,and am still a virgin as for vaginal/anal intercourse.  However, the only problem that I have right now is the worry about me contracting HIV from this past weekend's occurance.
  I had gone to a party Saturday night and I met a guy that I had not known.  Drinking was involved, but I did not get drunk, and I was aware of what I was doing.
  I ended up spending the night at that guys house.  That night we made out for a large amount of time and both of us removed our clothes.  I am only worried because, that night, I performed oral sex on him for no more than a minute, he did not ejaculate at all, but I am not sure if there was presence of some of his pre-ejaculatory fluids.  I am scared that maybe some pre-*** came into contact with the lining of my mouth, is it possible it could have gone in the membane and infected me?  Nobody ever ejaculated that night.
  I did not have any sores, cuts, lesions, or abrasions in my mouth.  My only habit is that sometimes when I get nervous, I tend to bite my cheek and lips, but NEVER to the point of bleeding, it never hurts either.  So I don't know if I just may have done some of that nervous biting of my cheeks and lips earlier that night.  He performed oral sex on me prolly for no more than a minute too.  He insisted on performing anal sex on me sometime that night, but since I did not have a condom, I said NO.  The next day I just became so worried about HIV.  
I told him about it, and he told me that he was clean.  He told me he understood my situation, but said again that he was clean.  I am not just gonna believe anybody.  It is now only about 7 days since anything happened, and I am just in a world of paranoia.  I know that because of it, it affected my grade on my chem test.  Only symptoms that I am having are minor body aches, and a night sweat that I had last night, but I checked my temperature in the morning and was normal.
    Am I too worried? When can i test?
Thanks,
-worried

[aggie2011]

they dont hurt either

[aggie2011]

I Don't know what this could be, but it has now been a little more than a week since I ever did anything.  I have noticed that I would develop this pimple-like things on the inside of my cheek in my mouth.  I prolly have gotten about 2 or 3 since lask week.  I also notice that I only get them, or at least notice them right after I get done eating.  They do not tend to last more than a day either.  I have had this before too.  What could these pimple-like things on the inside of my cheek be?

[Edward W Hook, MD]

I would not worry.  Your partner has told you he is not infected and, perhaps even more importantly, your only exposure was oral.  The risk of acquiring HIV from an infected partner from oral sex is vanishingly low.  Nothing you have mentioned suggests that you need to have an HIV test.  If you choose to do so, after 8 weeks the sensitivity of HIV blood tests is 98-99%.

Good luck EWH

[aggie2011]

So even if he happened to have HIV, and was in the highly infectious window, would my chances of becoming infected still be close to zero??

[jenkinjimmy]

Aggie, your risk of getting the HIV from the incident you describe is zero. The saliva in your mouth neutralizes the HIV virus, so you can't have the HIV from this incident. You made the right choice by not having the anal without the condoms. Make sure you stick to that behavior. Relax.