Hi and welcome to HCM. Thank you for your query.
This isnt normal but it doesnt need to be complication of your recent surgery. It can be related to other colon disorders such as hemorrhoids, polyps, colitis
or there can be urinary infections. So you should do urine analysis and abdominal ultrasound
first to rule these things out- If nothing is found you should do colonoscopy
Wish you good health,regards.