Hello doctor, I am a 21 year old male that had unprotected anal sex. Two days after, my feces have a very light fish smell with mucus, Very light abdominal pain and light pain in both testicles (always had very light pain in my testicles but feeling it the second day after anal sex makes me a little concerned).
Hi. When was this exposure? Unprotected anal exposure carries a high risk of acquisition of HIV and other STIs. The symptoms could have various reasons. I suggest you get tested for HIV and other STIs (sexually transmitted infections).  You can get fourth generation HIV rapid test now (to know about your baseline status), then at four weeks of the exposure and if this result is negative get a confirmatory HIV antibody test at three months of last exposure. Please revert if any other information is required. For more information consult an HIV AIDS specialist online -->