Pain in right testes. Can be done now?

I am having a dull pain in right side of scrotum since August last year. Sometimes it feels heavy sometimes it pains a bit like someone has kicked me there but only slightly. I have had multiple scans- 1 CTC , 4ultrasound , urine test , semen analysis and consulted 3 urologists but no result. They say no varicocele hydrocele stone nothing. I am popping random pills.L, Muscle relaxants and what not. But this pain stays like this. I have stopped all movements whatsoever. Any ideas what can be done now?? I also feel my scrotum is bigger on the right side and asymmetrical but the radiologist and urologist say it's normal only. Please help what can I do about this. I also feel sometimes some constriction in my lower groin region as well.