Cronic right scrotum pain. Something.

I am suffering from right scrotal pain for 6 months. It all started when i was going to gym, one day i got mild pain/irritation and i checked the scrotum, I can observe my right testis angle and position changed. It moved up and forward than earlier. USG of scrotum and abdomen didn't reveal anything. Was on different antibiotic and NSAID for several days no improvement. Pain increases while sitting .sometimes i feel like pain is from testis sometimes i can't find the root of pain. I feel tenderness/liquid like thing below abdomen sometimes. Also i got a dent near ribcage. I also have pain near public bone. I am very frustrated. please help. I strongly believe that "testis moved up and forward is causing the problem but my doctor said it's ok. " What are the causes for testis moving up and forward. please suggest something.