Have you seen a Urologist? You mention seeing a GP, but re: the lumps, I have no idea what that could be, but this is smthg to discuss w/ a Urologist. I would think they might wanna do a urinalysis as well as a prostate exam. Your symptoms do sound like epididymitis, but sometimes Prostatitis can cause similar symptoms, so I think they might wanna check for that just in case. Even tho you already had blood tests, they may order more - when they do a Lab analysis of a blood sample, they only check for the tests that are ordered, so if there was smthg they might’ve missed last time cause it wasn’t one of the tests specified, they might wanna go back & test for that as well.
But I’d advise w/ this type of problem - especially when previous diagnosis & treatment didn’t fix the issue - that you shoujd definitely see a Urologist. Good luck & let us know how you’re doing, hopefully you find a cure. Both Prostatitis & Epididymitis can be difficult to treat & can take awhile to recover, so be patient. I’ve had both in the past, and both took awhile to get better, but did eventually...