As long as i can remember i have had pain in the left side of my chest and get a cramp in the left side of my jaw. What is this and what type of doctor should i see, is it serious? Lately it has been more intense lasting all day usely, I exercise regularly. Im confused please help 31 year old male, 6'1 195 lbs and i smoke. I also recently was laid off and don't have insurance at the time is this something i can put off for a few months until my new inssurance kicks in?