Hello,
yellow is an indication of a liver disorder, but, I have read it can also be due to food sensitivities, some folks, when they eat foods they are allergic to, get extremely black circles under their eyes, sometimes this can look yellow.
Irregardless, I certainly suggest that you see your physician.
Yellow is an indication of a liver disorder. You need an in-person consult with a physician.
I also have very bad bags under my eyes