Sorry to hear about your condition.
is a one of the part of large intestine that is lying in horizontal plane of body meaning from side to side (left to right position). It's basic function is to extract extra amount of water and the important minerals from food and send rest of the stuff to the rectum
(storage for stool / waste product) part of large intestine.
Now about the pain, after the removal of the colon part that has some form of abnormal cell, which is known as colonostomy, the healing occurs with fibrous tissues which are tough then normal cell, so that the joint / healed portion can stay connected to the main part. But in some cases the over formation of such fibrous tissues may lead to sensation of pain as they are bit rough, or may have some other connection and leading to stretch causing feeling of pain.
1) Consult your surgeon and explain what is going on.
of colon may help to find out any abnormal connection formation ofter the operation was done.
Hope i have addressed you concern satisfactorily.
Dr. JAY PATEL.