What are my baby’s stools supposed to look like?
A breastfed baby’s stool will change from a black, tarry, sticky substance to a loose, yellow, seedy appearance in the first 4 days. If these changes do not happen, call your baby’s doctor. After 8 to 12 weeks, your baby may not have a bowel movement every day. As long as your baby is breastfeeding, his stool will be loose, unformed and seedy. It’s usually yellow-green to tan in color and may smell like sour milk.
