I don't have sufficient breast milk that's why my baby feed formula milk also,along with breast milk but from the 1st month her stool color always mixed of green n yellow.. what is the reason? is that normal or not?

A. Green poop is more common in formula-fed babies than breastfed infants. However, if the unusual color lasts for more than 5 days, there may be some other problem with your child's GI tract. Red, black or white stool are causes for concern.