I did finally see my doctor and had lab tests done, they came back except the billirubin levels were high (this is what causes the yellow color). They are not sure what it is so I had an ultrasound done this morning and should know more next week. I believe they are leaning towards a diagnosis of Gilbert's Syndrome, which is basically harmless, most people never know they have it unless they fast, they then turn yellow for some reason due to the syndrome but it is harmless.