[header] How to tell if your newborn has diarrhea [title] Monitor the frequency of your child's bowel movements. [step] The frequency, in part, is affected by whether you are feeding your baby breastmilk or formula. Babies who are breastfed during the first three months of their lives will generally pass stool right after being fed. 
This means that a breastfed baby could pass stool 8 to 10 times a day. [substeps] A baby who is fed formula will generally pass 1 to 8 stools a day for the first week of her life.