there may be a chance that your baby is intolerant to lactose. i would take her to the doctor and demand action. for the moment you could feed your baby cooled boiled water to ensure that she is receiving enough fluid the body can cope better without food than it can without fluid. i hope you find this useful and i hope your baby feels better soon.
my 6mth old weighs only 12. 8 lbs and has had diarrhea for 3 weeks what tests could be done to help determine the cause. after the first week i took her to the doctor and they diagnosed her with ear infections. she started augmentin a week later i took her back because she was still having diarrhea and loss of apetite and fevers ranging from 99. 0 - 102. 7 rectally. her wbc was 9. 5 and they said it was probably a virus. now another week has passed and she isn't better. no fevers that i have noticed but she is having watery bowel movements about 6 times a day and is only eating about 16 oz of formula a day.