Hi, im 15 and suffered a mild testical injury jumping to a pool, it was painful for abit but subside in a few minutes, the next day at night, i masterbated and i began to feel an odd ache in my right testical, the next morning it was pretty painful and ended up going to the ER, said it wasnt anything major, then I went to 3 more doctors and all of them said it was just an inflammation of the testicals, over the next few weeks it slowly went away, now 3 months past and it's come back, but on my left testicle, i have minor pain but its annoying, and i experience pain when i hold in urine for a period of time and the testicle is tender and painful when i touch it, i dont know whats wrong