You will have to ask your cardiologist. It isn't about the stents, but about the condition of your heart.
Hello,
Since you had the stent surgery just 4 weeks prior, it is important to avoid any strenuous physical activity like altitude climbing at such a short time span. This may cause further complications.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.