Don't know if it's my place to be in this thread or not . . . but here's my two cents anyway
Do you wear boxers, or briefs?
The reason I ask is my boyfriend has what sounds like a similar problem, and he's had it all of his life. Anywhere from a mild aching, to sharp pains. He finally swallowed his pride and saw a dr, and the doctor told him . . bum bum bum - his balls were too big. Seriously. He suggested that my boyfriend switch from boxers to boxer-briefs, to control the pain, which he did - and now he's fine. Just needed a bit of support. . . .