Intermittent Chest pain even with regular activities like walking and lifting small things. I do not have cough. Also, I have fast heartbeat when I getup fast suddenly. Last year i had ECG and stress test and no any alarming sign found. I used to smoke and quit both smoking and drinking alcohol about 19 months ago. I have hypertension and GERD. I take medicines like amlodipine 5mg, losartan and raberprazole.