For babies who are only getting your milk (no formula), food allergies are quite rare. If your baby is fussy or having more mucousy, watery, and green stools or having a big increase in spitting up, it's possible that baby is reacting to inflammatory cells which are part of your immune system which is shared via your milk. These inflammatory cells can be released when you consume a food that you don't tolerate well, are exposed to an allergy, you have inflammation from rec