dude i had the samething. In the mornings right when u wake up was the worst times. I would lay in bed trying to go back to sleep but it was impossible. Any how i went to he ER and took Xrays and a physical and everything checked out. Ive been smoking since 6 grade and i am 22 years old now, i also smoked cigs since 7 grade so that whole event scared me stright and now i havent smoked a cig in almost 2 years. Also BTW, after i quiet cigs my pains went away, Some times very rarely they will come back, but not nearly as much and not nearly as bad.