Breast milk

Bianca • Mommy to a lil boy and a lil princess and having my last child on march 2nd 2015 happily engaged ❤️
How soon is it normal to have breast milk? im 6 months and already have some this is my 3rd pregnancy all preg are healthy and normal this is my last baby but thee only one that the milk arrived soooo early..... has this happened to anyoneelse? jux curious no biggy