Thanks for your question on Healthcare Magic. I can understand your concern. Since you are having heart disease (tricuspid atresia), we should first rule out heart diseases (heart failure and coronary artery disease) for your symptoms. So get done ecg, 2d echo and stress test. If all these are normal then no need to worry for heart diseases. Lung disease like bronchitis can also cause chest pain while lying down. So consult pulmonologist and get done clinical examination of respiratory system and PFT (pulmonary function test). Quit smoking if you are smoker. You may need inhaled treatment if PFT shows bronchitis. If all these are normal then stress and anxiety are likely cause for your chest pain. So avoid stress and tension, be relax and calm. Don t worry, you will be alright. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.