Hello! Thank you for asking on HCM! I understand your concern, and would like to explain that the difference between a simple coronary spasm (that is a vaso-spastic angina) and a true myocardial infarction on ambulatory settings, is sometimes difficult to differentiate. Generally speaking, a transient coronary spasm presents with a shorter chest pain, which may completely fade thereafter. Resting ECG changes will differentiate the true ischemic implication of both situations. Laboratory cardiac enzymes are reliable markers for ruling in/out possible subsequent ischemic complications, differentiating between just a coronary spasm and a heart attack (damage). I recommend you to immediately seek medical attention (nearest ER service whenever you experience chest pain complains), as it is difficult to make the differential by yourself on ambulatory settings. Anti-spastics (like calcium channel blockers, nitrates, etc) may be used during those chest pain bouts. You need to discuss with your attending cardiologist about the above mentioned issues. Hope to have been helpful to you! Greetings! Dr. Iliri