Hello, There is a history of sigmoid colon removal hence there can be a stricture or narrowing formation at the anastomosis site. Another reason is discontinuity in the intestines hence the nervous signals are not normally passed for the bowel movement to have normalcy. I would advise you the following in such a situation: • Get barium enema study, defecating MRI and colonoscopy to know the exact cause and get treated accordingly. • Also stop all the foods and beverages that instigate or enhance your problems. • Take mild laxatives, try all and continue the one that suits and helps you the best. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. T Chandrakant