I have chest pain?

It is for while I have chest pain, and sometimes this pain moves to my left rib and now it is in stomach. First I did X-ray the result said I have chronic bronchitis, then I made a CAT Scan and result says: I do not have any problem in lung, in my spine or even something to heart issue, at least CAT Scan result says. Now I have pain in my stomatch and chest, I am totally confused, what should I do to which dr to go !! please help.