I got a approx 8 week old kitten yesterday from a shelter and he so has diarrhea. We have put him in the upstairs bathrooms to seperate him from our other cat, yes I have have just crossed into the relm of a multi cat household. When I went to check on him this morning he had, had an accident (thank goodness on the tile) and it basically looked like brown water. He was dewormed at the shelter. How concerned should I be here, can i give it a day or so or do i need to take him to the vet right now?