I think it'll be best to consult a doctor, try talking with your family as they might have more knowledge and experienced. Maybe it's the way you play rough but what do I know I'm barely 13
My chest hurt after drinking caffeine so I e-mailed my doctor. I told him what I'm feeling and he explained to me well. If you do that it's garenteed to make you feel less worried.
Thanks, I hope you feel better,
Jeremy