Hello, and welcome to HCM!
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
, 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!