Hi and welcome to HCM.
This isnt common and most people usually benefit from stent
placement. In every case it is much better that you have stent then not. Your symptoms may be caused by your primary disease. There can be abnormality in pancreatic secretion so digestion is affected. I am sure that you ll feel better after some time,try to eat easier food, and more but smaller meals. Also ask your doctor about certain medicines for nausea
and better digestion. Wish you luck.