Sir, you have mentioned that you have undergone hemicolectomy surgery on the left side that is on the descending colon. So, it is obvious that there is little change in the digestion/constipation after the surgery. Accordingly, your doctor must have suggested to avoid certain foods.
To let me properly address your issues, I need to know that how long has been since you have gone this abdominal surgery as well as the reason for the surgery you have gone through recently.