Preeti, Thanks for your question. Though most of your symptoms are not classic for heart disease, you should know that chest pain can sometimes be very difficult to diagnose. Because of your concern and your new exercise program, you should see your physician for an evaluation. After a thorough history, physicial examination, and any tests he might perform, he will be best qualified to ascertain the cause of your discomfort. If heart disease is ruled out, then you can continue your exercise program with a clear mind. Also, if not your heart, less serious etiologies like musculo - skeletal causes are possible (and perhaps caused by the exercise itself). I hope this information has been helpful. Martin Cane, M.D.