When diarrhea does occur, nursing should be maintained in most cases. Allergy to breastmilk is extremely rare. Normally, stools in an exclusively breastfed baby are unformed, and of pea soup consistency. The odor should be mild. Frequent, loose stools are not uncommon.
Some breastfed babies have a bowel movement each time they nurse.
Contact your baby's health care provider if your baby is showing any of these symptoms. Metabolic disorders, such as primary lactase deficiency and galactosemia, though very rare, can make breastfeeding impossible. If your baby is otherwise healthy and gaining well, your health care provider has probably already ruled out these conditions. Sometimes a breastfed baby develops watery, green stools and gassiness. Foremilk is the thinner, lower fat milk your baby receives at the beginning of a feed.