D.N.
Hi. My son had diarrhea for about 3 days and it was like brown water (sorry so graphic, but true). He did not have the vomiting. I was advised to try Danactive, or any yogurt with active live cultures. I just put it in his soy milk, and after drinking it he didn't "go" until the next evening. His BM was at least a better consistency the first time he did "go", and then it was back to normal the second time. Maybe this will help. I hope so. Hang in there:)
D.