Hello and thank you for posting, 

I am sorry that you have this ongoing symptom. I would urge you to talk to your doctor or specialist nurse and explain what is happening as they will be able to advise you. They know you and your cancer so would be in a better position to suggest and maybe even prescribe you something.

There are side affects after bowel surgery that can take a while to calm down due to all the healing involved. Sometimes the bowel needs time to return to how it was.  This link discusses some of the changes after bowel cancer treatment.

Take care and I hope you start to feel more comfortable soon. You may find it helpful to talk things through with one of the nurses on our helpline.  The number to call is 0808 800 4040 and its open 9am till 5pm, Monday to Friday.

Sarah.