Answers: You should enjoy it looked at by a physician since you may have something simple to something serious. He will make a testicular ultrasound and based on your history even cultures to rule out any infectious process. Testicular tumors are massively frequent at a young age, I do not know more of your history excluding your physical findings...regardless please have it checked.
Hey man sorry bout' your not here testicle. But, i think you might hold stained your groin because my testicle hurt to and it was a strain and my backbone was hurting after too it really have always hurt. if it doesnt capture better by next monday post it on here that it hasn't. also have it affected you reproduction.