Mine never hurt while on the gear. However quite awhile back i was taking some prohormones and had my right nut ache like hell. It went on and off for 2 weeks with pain. I ended up going to see a urologist. He couldnt figure crap out. Although i think he enjoyed fondling my nutz. He also checked my prostate. So dont go to the doctor if ya dont wanna get played with. I stopped taking the prohormones and it went away. Damn doctor was gay as hell too. While he had his hands on my sack he asks "so are you married?" Nice bedside manner huh...of all questions to ask at that time!