Hello. Thank you for your question and welcome to HCM. I understand your concern. Anginal pain (chest pain originated from a blockage in the coronary arteries) is characterized more by a heaviness or tenderness in the midchest, and it it not affected by the inspiration-expiration cycle. It also has other properties, but this is to refer to your complaints. To determine this sharp pain you are having then we must search other potential culprits. If it happened after a workout where there was clear pectoral muscle involvement or workout that requires heavy breathing, then the highest probability is that this pain comes from the intercostal (between ribs) muscles and/or other chest structures of the locomotion system. Another possibility is that this pain can come from acute or chronic inflammation of the organ linings within the chest, such as pericardial (the sac that surrounds the heart) or pleural (the sac that surrounds the lungs) ınflammation. In order to rule these diagnoses out, I would suggest an EKG and echocardiogram for the eventual pericardial origin, and a plain posterior-anterior and lateral chest X-ray. I hope I was of help. Take care. Kind regards, Dr. Meriton