My 3 year old got the throwing up amd diarrhea about a week ago. I thought she was over it but about 4 days ago she is really pooping a lot. She has had about 25 or more very soft poops and it's beginning to burn her butt up. What can be causing her to be pooping a lot? Any suggestions

Is there a reason you haven't taken her to the doctor? That would seem to be the next thing to do.