my right side of my chest has been hurting for about three weeks now. i just graduated marine bootcamp last week. i hurt it doing something in there but not sure how. the pain went away and just started back up again tonight. could i have torn or stretched out a muscle during BC? how long would something like that take to heal? it only really hurts when i breath in.its almost feels like its on the bone or right behind it...any ideas on what it could be and how i could fix it? i dont want it bothering me when i go back to SC for training in 2 weeks