My Child (2 1/2) Has White Or Pale Yellow Or

My child (2 1/2) has white or pale yellow or pale green stools. She had a stomach issue about 1 1/2 weeks ago with vomiting for 2 days, then diarrhea for about 2 days. She seemed to be getting better, then on Monday she was throwing up again, with more diarrhea. The past couple of days stools have slowly been getting more solid, but I realized that for over a week, even when she had diarrhea, her stools have been white, or pale yellow, or slightly green... should I be concerned? She does drink more milk and less solids since she has been sick. Is it the milk?