The roof of my mouth is yellow and has been for months, just wanting to know the cause.?

See a dentist: We can't diagnose your situation without actually seeing you. What you describe is unusual. You should see a dentist for a proper evaluation and diagnosis.

Yellow mouth: If you are accurately describing the color inside your mouth, you need to be examined by a dentist and/or a physician to see if you have a problem in your body system that is causing this color. Mouths can often reflect problems that exist in your body.