Partially black stool, rectum bleeding, pains in gallbladder area after eating, pain in upper left rib area, bloated/full after eating small amounts or extreme nausea (but no vomiting). visited clinic and they said i was fine and sent me home. help!

Not fine: See a gastroenterologist. A proper diagnosis is needed. Black stool cable from bleeding in the upper gi tract unless its from taking bismuth products or iron supplements. Rectal red blood needs to be ordered explained. Inflammatory bowel disease, gall stones, gastritis, peptic ulcer, pancreatic pathology, gluten intolerance are possibilities. Get help from a specialist. ?Gastroscopy, colonoscopy