For a few days after birth, you produce colostrum not milk. Colostrum is a creamy liquid that’s high in protein and chockful of antibodies.Breastmilk contains over 400 nutrients.Your baby gets two different kinds of milk during a feed: A watery, thirsty-quenching foremilk and the calorific hindmilk that needs for growth.Breastmilk changes during the days so your baby always gets the right nutrients.