Testicle pain - nobody knows why

Hi!

About two years ago I was on vacation and walking quite a lot. One day, while cruising a mall, i suddenly felt a sharp pain in my right testicle. I went to the bathroom to check it out and found that my right testicle was really sore - the slightest touch felt like it was being crushed.

Now, I'm 19 and the pain is still with me, but not always. It comes and goes, sometimes I can go weeks without feeling a thing. But especially after physical activities or masturbation the pain sometimes come back. And when it does, it stays for a couple of weeks, until I can rest (not walk too much) for a day or two (then it goes away).

This spring brake the pain was completely gone. I was really lazy and didnt exercise at all. But its now three weeks since I began school again, and the pain has returned.

A couple of months ago I visited 2 different doctors, both examining the testicle and neither could find anything wrong with me. I havn't had any intercourse yet. I've also been to a ultrasound - "all fine" the doctor told me. The urine sample showed nothing neither. The last doctor prescribed a pain-relieving medicine called naproxen. It does relieve the pain, and If I take two a day I'll do fine.

The doctor told me that there was something wrong with me, but that he couldnt pinpoint it. He also said "its not a question about IF the pain will go away, its a question about WHEN". But seriously, there is something wrong with me, and I'm going absolutely nuts. Sometimes I cant touch the testicle for like two/three weeks, which also means no masturbation for that long period. Is there anyone who has a clue?

All help is extremely appreciated.