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The description sounds like Anxiety
/ not heart disease
This age is too late for congenital heart disease / too early for Coronary Artery
Whatever it is, it is simple to exclude heart problem - See your doctor > EKG / HOLTER (ambulatory monitoring) / ECHOcardiogram
/ if necessary, TMT (Treadmill exercise ECG) / LABORATORY work-up – all can be done in a short time to reassure and convince you...
The treating doctor may suggest them depending on need, based on his assessment of the situation.
Wishing speedy recovery