I have yellow stool and there is little red blood on it and i have nausea mostly at the night what tests should i have to check my health please?

Diarrhea: You should have an evaluation by a gastroenterologist to rule out inflammation or infection within the colon.

Go to Doctor: Yellow stools with blood and nausea need to be worked up by a doctor. Yellow stools can result from a reduced production of bile salts. The doctor can run tests to determine if the yellow stools are a result of a digestive condition or infectious causes. You may have GERD, Celiac disease , liver diseases like Cirrhosis, Hepatitis, cancer mets,, gallbladder disorders, chronic pancreatitis etc...