Yellow stool, answer ? win a prize

For past couple of weeks have been having alternating yellow stool, yellow diarrhea.

waiting on lab work for stool test.

last time I had a normal color bowel movement was when I had ordered a pizza from domino's.

two weeks of on/off brat diet to clear up diarrhea, make stool hard.

went a bought another pizza last night and stool was close to normal color.

any suggestions? I have eaten swiss cheese, and bread, in the last two weeks, not sure on tomatos though.

the prize, my undying appreciation.

god bless, andreax