Hello dear, 1. Seek an opinion from a qualified cardiologist to rule out any abnormality ( I presume that you have already done so, but please seek an opinion if not done already). 2. If there is no problem as per cardiologist and your worry continue, please visit a psychiatrist for comprehensive assessment and further management. 3. Health anxiety is a real condition and can be treated effectively with psychological intervention and medication. Do not lose hope, you can be helped.. Hope this helps you. Best wishes for your health and future.