Hello, this is hard to explain. I'm 16 and I have pain under my left testicle. It's not extreme but its sharp. I read about having blue balls on one side but even after trying to massage the tube like stuff under there it still hurts. It comes and goes and sometimes doesn't appear for over a month. I don't feel any lumps or swelling. Could it just be a nerve being pushed or something? Sometimes it's in the other testicle. IT just feels like a cramp and doesn't really hurt unless I move.