Hello, I am having middle stomach discomfort - kind of flatulence for around a week. I have bowel movement 2 or 3 times a day, not clear. Doctors gave Rebeprazole and Antacid - they don t work. Stomach makes sounds, stool floats - consistency semi-solid, yellow. No Mucus. I feel not to eat, but can eat. Feel hunger too. Intermittently, the uncomfort gets worse, and I feel fatigue. 5-6 months before, I had continuous pain in middle stomach - doctor said it is IBS. It got better with medications till this uncomfort (not pain came). 2 unltrasounds in 2013 and 2014 detected no stone in gall bladder, pancreas, kidney etc. No parasite in stool test around 5-6 months before. Endoscopy found no problem in upper stomach. Have little nausea intermittently, but do not vomit. What is it? Could it be cancer in lower intestine? Thanks.