Hello. Thank you for posting.
In severe cases, people tend to become dehydrated. So this is something to watch for. Other signs and symptoms of severe infection include:
Watery diarrhea 10 or more times a day
Abdominal cramping and pain, which may be severe
Rapid heart rate
Blood or pus in the stool
Loss of appetite
What information did your doctor give you? If you have concerns, especially if your baby's condition does not improve, call your doctor.