Went to hospital a week ago, got out all test were fine, i'm having chest pains, pain in my jaw and burning in my chest sometimes, what do i do?

Chest pain: You have a talk with your doctor and discuss the symptoms and get the docs explanation of what is going on. Out here in the cloud we don't know you to advise like your doc does.

Further eval: Re a cardiac diagnosis, would suggest that in addition to ecg's, blood tests, that a stress study be done (if not already). If continued symptoms, a chest ct angiogram of the coronaries might provide addl information. Supporting history would include symptoms provoked by exertion. Other possibilities-gerd, musculoskeletal, pulmonary, or anxiety driven.