About two weeks ago I had a homosexual encounter with another man. This involved mutual masturbation and mutual unprotected oral sex. It was a mistake I made while under the influence of alcohol. Ever since I have been having severe anxiety over the chance I caught an STI.

My question is what is the realistic probability I caught something. There were no noticible sores and he claimed he was 100% clean. In addition there was no ejaculation in either mouth.

I have had no burning during urination or noticible discharge from my penis. I have had occasional pain in my testicle but they are not particularly tender to the touch so I'm not sure if it is just caused by my anxiety.