Hello again doctors, I feel frustrated, angry with myself and feel like not living anymore, I cheated on my wife yesterday, and I feel terrible about it. The sexual encounter, was with a woman I know but she is quite promiscuous, I performed oral sex to her (cunninlingus) several times, she to me for a few minutes, she wanted me to penetrate her but I did not have enough erection and I could not penetrate her, my fear is HIV, I am very afraid. What is the probability of having it? I could not get the PEP.

First, it probably is unlikely your "promiscuous" partner has HIV, which remains uncommon in women in most countries. Second and most important, there has never been a proved case of HIV transmitted by cunnilingus:  you will not be the first in the world. I do not advise PEP; if you came to my clinic, we would not prescribe it.

You really should not be worried, do not need HIV testing, and if you have a regular partner, you can safely continue your usual sexual relationship without putting her (or him) at risk for HIV.

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

HHH, MD