Left side chest pain &chest; heaviness.

Sir I am 28years old men. In the day 16/08/16 at 6pm i feel some chest pain and afterday i go to hospital doctors say some diagonestic test.after test lipid profile Total cholesterol :203mg/dl Direct HDL:54.2mg/dl Direct LDL:118.8mg/dl Triglycerides :148mg/dl VLDL:30mg/dl Total cholesterol :3.75 LDL:HDL-2.19 And also done echocardiogram. This report says normal sized cardiac chambers and left ventricular ejection fraction is 67%. Also done TMT test. TMT test is negative provacable ischemia . Max HR:159bpm(82.81%of192bpm). Also done chest X-ray. That say lungs fields are clear and normal .i feel about 6-8 months left side of my chest is heavy and discomfort feeling. Some times I feel some flip flops on centre of the chest, pain in both sides of neck .some times feel just like mild electric shock on left side of chest and also some breathing problems. Why it is happening and what can i do. doctor does not give any medicine .