hiii dear if it is not heart related pathology because you must go for every heart check up with that exclusion reference from you it may be due to stress related or gastric reflexes for gastric reflex ,,u can take antacid for stress regular exercise and meditations proper sleep and healthy food avoid smoking drinking deep breathing twice a day stress free work enjoy hobbies do pleasurable activities music etc will help in reduce stress medicines like etizolam is helpful as and when required but physical health is also imp as psychological health regular check up is also necessary stay healthy take care thank you