Frequent Bloating, Constipation And Diarrhea, Blood And White Chunks In Stool, Nausea. Diagnosed Slow Motility. History Of Hirschsprung S Disease. Suggest

I have frequent bloating, constipation and diarrhea. Occasionally nausea and dizziness. I occasionally have blood in my stool (usually bright red so I assumed from internal hemorrhoids but today it was darker and there appeared to be a small clot in the toilet). I also had a few bowel movements with what appeared to be white chunks in the stool. I see a GI specialist and have had an upper GI test, a sitz marker study, x-rays and ultrasounds and I have not been diagnosed with anything other than slow motility. I have not had a colonoscopy. I have tried acid reflux and constipation rxs that have no helped. I have a history of Hirschsprung's disease and had pull through surgery as a child. The only things I take are a daily multivitamin and Senna to relieve constipation.