I don't smoke or do drugs however I did party and over drink once in
college. I started to have discomfort in
my chest last November (2008). It felt like someone was just lightly pressing on my left pectoral. It didn't hurt, it was just annoying, I would adjust and it seemed to go away, but it would always come back. Once in awhile I would get a sharp quick jabbing pain just underneath my left pectoral. It didn't seem like it had anything to do with breathing.