Hello, and welcome to HCM! Chest pain is always taken seriously by doctors, because it can represent a heart attack. However, many other things can cause it too, like coronary artery disease, acid reflux, anxiety, sore muscles, cracked ribs, etc. Since the pain you had seems to have been very brief and mild, it is most likely not a heart attack. But you absolutely need to be evaluated by a doctor very soon, who will very likely do an EKG and possibly other testing. I wish you good health, and thank you for posting on HCM!