#AskTheExpert my baby get a frequent cold of mucus greenish yellow why does it happen? is it allergy?

A. hi dear Excess bile can cause green poop. A breastfed baby's poop, as it transitions from meconium to mature milk, may look greenish. Green poop may indicate a foremilk/hindmilk imbalance in breastfed babies, which results in your baby is getting a larger portion of foremilk (watery milk) than hindmilk (thicker, fattier milk).