Apparently green poo in a breastfed baby can be an indicator of at least two things.  One.  The baby is only getting the foremilk, which is very watery and not enough of the hindmilk, which is the thicker stuff that keeps them happy longer.  Not our issue, as Miss Rebecca is a one-boober.  Two.  A food allergy from something the mother ate.  Could be.  How do you track everything you eat and figure out which is the problem causer?