I had unprotected vaginal sex with a woman in July and about a week later I started to experience burning while sitting in my anus. It lasted about a week and then subsided. I have a rash on each side of my buttcheeks that is tan in color, initially it was more pink. Since then I have had diareaha, a sore throat, and lower back pain. Also, while sitting my scrotal sack is very sensitive and seems to sweat more than what I would consider normal. I have had no fever but things dont seem to be getting any better. I tested negative for Calmydia and Gonnorea as well as HIV.
Any help would be greatly appreciated.