welcome to HCM.
have you done any electrocardiogram (ECG?)
Have you been given acidity pills? get sour eructuations?
are u breathless?
many conditions may mimic this pain. at your age heart disease
is uncommon , but not impossible. also dyspepsia
(acidity variants ) can mimic . oesophagitis, GERD
, rarely pulm. embolism
since it there for many days, kindly get evaluated in details at a good physician's place... and let me know the progress.