Feeling little heaveness from last few w

Dear sir.. feeling some kind of heavness, sensation or sometime pain for couple of minutes in my left hand side chest (heart side). . The pain is moveable its start from front area of chest and moves back to back side ...  its comes for seconds. . Some time little sensation in left hand vains .. Few days back I had check with the emergency dept of one of government hostpital.. then they were  perform ECG and other test which goes negative that time.. Troponin blood test  - also negative They said its muscles pain or gastric but still I feel the pain or sensation sometime the same.. I am active person and do 1 hour exercise daily. . No problem in running or breathing, No extra sweating , I m little overweight.. I am throynorm patient which is under controlled. . Cholesterol triglycerides level is 245 rest all level are in normal.. Pls suggest what to do next...