Hi, I have a 9 month old baby with diarrhoea for over a week. She seems to be teething . I tried BRAT (banana, rice, applesauce, toast) but it does not seem to change anything. Mind due she still gets her formula milk besides BRAT diet . She eats and drinks well, she is full of energy and happy. Should I get worried? Any advice of what else I can try? thank you.