Hello. Thank you for your question and welcome to HCM. I understand your concern. Well, I would start my answer by describing you the anginal pain (pain derived from heart when it is suffering from insufficient blood inflow caused by narrowed coronary arteries). It is described more as a tenderness or heaviness in the midchest, radiating to the both sides of the chest, the jaw, left shoulder and/or arm, which is triggered by physical activity and terminated by stopping the physical activity. The pain you are experiencing, which is, I assume, not related to the heartburns, as you describe it, may come from an inflammation on the linings within the chests, like pleura (lining of the lungs) or pericardium (lining of the heart), or an inflammatory/infectious process in the bronchi/lungs. In this scenario, where pain has a inspiration-expiration variability, I would recommend you to get an plain chest X-ray and an EKG and/or an echocardiogram, to determine whether any of these linings is causing the pain. As for the heartburns, the major factor causing them is the excess production of acid after taking certain meals (like, xanthyne derivatives, such as coffee, energy drinks; alcohol and tobacco; pickles, grilled and spicy food). If you are still experiencing this king of symptom, I think you should try a course with a protein pump inhibitor (PPI: omeprazole, esomeprazole etc.) drug, for a month. If still you do not find relief, then a consult with a gastroenterologist and an upper gastrointestinal (GI) endoscopy, would be in order. I hope I was helpful with my answer. Best regards.