Why is my baby pooping green colour ? What is the reason behind it ? Baby is completely on breastfeeding .He is 3mnths and 7days old

A. looking normal. Green stool in babies is nothing to worry about, in breast fed babies indicate, an imbalance of foremilk- Hindmilk, often result in green stools. Allowing your baby to suck milk fully from one breast before switching to the other breast.