I don't know the answer for your body.
But when my body reacts that way it means I have been eating things that are very wrong for me, and the bile and other gunk is going backwards into my stomache making me feel barfy. The light coloured stool can be a sign on difficulties in digesting the food. I get like that if I eat grain products.
However it can also be asign that things are clearing up, as things often get worse before they get better.
How about just asking yourself, and honestly accepting the answer that comes up?