I am a 22-year-old gay male.
Two weeks ago, I made potentially the worst decision of my life and drunkenly agreed to condom-less anal sex. I was the receiving partner. He ejaculated in me and the next day there was blood in my stool. This was the first and only time I have had sex without a condom.
The other guy swears up and down that he is HIV negative. I know him (this wasn't some random guy), but I don't know him well enough to completely trust that he is tested regularly/recently.
I am planning to get tested at the three-and-a-half week mark, three month mark, and six month mark. In the meantime, what are the approximate odds that I have been infected (I realize there is no foolproof way to pinpoint odds)?
Thank you for any help you can give to keep my nerves at a low before testing. I have learned my lesson the hard way.