I had unprotected sex with someone and about a month or so later began experiencing discomfort in my genitals. It seemed as though the tube running down my penis shaft was swollen or inflamed (visibly so). I went to the doctors and STI clinic, but no joy. This has developed into a feeling whereby my scrotum feels retracted because of this problem with something internally, and that my penis hang properly as something inside it feels swollen/inflamed. I have an incredibly itchy anus as well. I can't actually empty my bowels now without having to hold on to my genitals to stop my testicle shooting up into my groin. I wouldn't be able to have sex, either, for the same reason. Any ideas what it could possibly be? They have done a lot of tests (swab, urine, blood, scan etc) and nothing has come up. I'm in constant discomfort with this.