Hi, I was having symptoms of hear palpitation, sweaty hands, hurt burn and tingly sensation on left arm which alarmed me to go to Emmergency several times. ECG result came out normal with IRBBB, negative troponin. I was discharged several times. Following up with my general doctor, Holter monitor/Stress test/Echocardiogram were performed which all came out negative. But still I am getting some symptoms of pain or worry of sudden cardiac arrest. Should I be worried?