Hi, I am a 37 yrs old male, non smoker, I started feeling chest pain 3 months ago, it come with feeling heavy on the left side of the body, no pain during breathing or even deep breathing. Just shortness of breath. Did the stress test and the result was neg, I do not have high blood pressure or diabetes. Then it goes away for about 2 months, now it come back with the same symptoms again. Can you suggest what should I do next?