Throwing Arm Injury

[tonybormin]

About three years ago our school had an intramural dodgeball season. Instead of the standard rubber balls that year they decided to use a very light nerf-like foam ball. It was really difficult to throw with any velocity unless you really whipped it. After the games everyone's arm is very tired and sore. One game left my shoulder in intense pain, I couldn't move it the rest of the night and had to ice it down. I sucked but I didn't think too much of it.

I haven't had a throwing arm since. Any time that I try to throw a football or baseball with any speed there are pains in my shoulder again. I don't play too often but when I do it's kind of embarassing with weak tosses every time I touch the ball.

I know nothing about sports injuries, what's wrong here? I figure if it hasn't healed itself in three years there's probably something seriously wrong. Is there anything I can do to get this fixed without surgery?