I was lying in bed this morning and like semi-woke up to turn and when I did I had a sharp pain in my chest below my left breast and direclt in my back below my shoulder blade. I think it may be a pulled muscle but does anyone think it could be heart related?? The pain is still there but only really hurts when I mimic the same movment i tried to make in bed any suggestions??Oh and if I try to stretch my chest outward it hurts badly???