Hi welcome to H.C.M.Forum. you are having sinus bradycardia
. it is a healthy indication of health.
but cardiac problems will come suddenly, without notice. but your problem may not be cardiac.
i advise you to consult a cardiologist
he will examine your ECHOCARDIOGRAM
ANGIOGRAM AND CHOLESTEROL levels and diagnise the problem. other posibilities are gastritis, anaemia , hypoprotenemia
and hypo vitaminosis leading to ccf. dont worry you will be fine.