I am concerned about exposure to HIV from this situation. Do you think this would warrant seeking a PEP treatment?

You are at little or no risk of HIV from this event; I don't even recommend being tested for HIV, and this situation certainly doesn't warrant PEP. First, it is very unlikely your partner has HIV. But even if he does, the risk of HIV is very low if not zero. No cases of HIV transmission have ever been attributed to analingus. That doesn't mean it can't happen, and admittedly it's a difficult issue to study. But we know that saliva kills HIV, and that therefore exposure to an infected person's mouth or saliva carries little risk if any. This fact also bears on fellatio by your partner on you:  there has never been a scientifically documented case of HIV transmission oral to penis. Based on how some people believe they were infected (whether or not that belief is accurate), CDC calculated and has published an estimated risk of one chance in 20,000 if the oral partner is infected. For the oppose exposure -- your fellatio on your partner -- the risk estimate was one in 10,000. These figures are equivalent to giving or receiving BJs with infected partners once daily for 27 years or 55 years before HIV transmission would be likely. I would put the risk estimate for analingus in the same ballpark. And I do not believe exposure of saliva or even genital fluids to a recent shaving nick significantly increases the chances of transmission.

If you'd like to reduce the risk still further, and if you can contact your partner, you could ask him to be retested for HIV. Maybe you'd find he is just as concerned about this event as you are and would appreciate an offer for both of you to be tested at this time.

I hope these comments are helpful. Let me know if anything isn't clear.

HHH, MD

This question might be a bit in the weeds, but if he had contracted HIV in the past 2-3 months and had acute HIV, do you think that would greatly increase the risk of his saliva/fluids in his mouth of transmitting through the open cut I had?

Thank you for your time!