hi just tossing out a couple of ideas. anyone ever tested for gastroparesis? it affects the motility of the stomach and gi tract. also celiac – doesn't always cause diarrhea, can present with constipation due to inflammation. i take 3 senna and 3 colace daily. my gi doctor doesn't want me to develop a mega colon. i recently started taking probiotics. i don't go always go everyday but go on a regular basis.