Had Heart Attack. Introduced Stents In Lad Artery. Feel Weak. How Long Will It Take To Come To Normal?
Generally in month time you should feel quite normal, unless MI (Myocardial Infarction) has been large and has weaned your heart very much. In that case it would take up to 3-6month for you to feel good. Second and most common could be that you are not had formal cardiac rehabilitation programme and that could be one reason for your symptoms. Third and also common is medication side effects. Please discuss with your physician in China with details. They should be able to sort it out. If its infrequent and not interfering with you daily life, you just need to ignore it.
As far as your second question, yes once you have heart attack in majority of patients there will some remaining ECG abnormality. If the doctors don't have previous history they can mistake it for fresh MI and might need to admit and work up. But if you have previous ECG and no major deviation from it than there is no reason for concern.
Please get back to me you need any further clarification.