I have had debilitating nausea for almost a week. I have not been vomiting but just don t feel like eating anythig. Just toast, plain crackers, applesauce, white pudding, etc. Been taking Maalox, tums, and Nexium which was prescribed last summer after a negative endoscopy. Nausea had gone away after 3 weeks of Nexium, but suddenly returned a week ago. Today I had dark, tarry stool. I am concerned, as we away from home for the winter and don t have a doctor here.