Chest Pain - Is it possible my sternum has been pushed back?

For the last few days I've had heavy chest pain and have been unable to sleep. I've had trouble breathing and my chest feels like somebody is standing on it. This started when I had around 100 pounds of weight held onto my chest for around ten seconds. Now I believe the muscle has swelled up and is causing me the discomfort, however, is it possible that the sternum could have been actually pushed back into me? I don't know if I'm just being paranoid, but but when I run my hand across my chest it actually feels farther in. I'm hoping it's just bruised muscle..

[the preacher]

i have a problem i did alot of resistance training for about 1 and a half years i focused on my arms, chest, neck and abdominal areas. but not until recently when i stopped training that my chest has had a alot of pain in it. everytime move my chest clicks and hurts very badly. like you said in your comment im suffering similar symptoms but others aswell. everyday the pain comes and goes and usally after i sneez or something its clicks heavily and stops. but now the pain jus stays. if anyone knows or has an idea of wots goin on could they please write a comment on it...

[ben406333]

perhaps your muscles are a bit out of balance.  Is the strength of your back and small shoulder muscles in proportion with your other muscles?