When do you start producing milk?
You may start producing breast milk months or weeks before your due delivery date. One of the first signs that your breasts have started producing milk is that they will become fuller and heavier, and they may even hurt sometimes.
During the second trimester, your breasts begin to create colostrum. Colostrum is the first food your breasts produce for your baby. It is usually thick and yellowish and contains high amounts of proteins and antibodies to strengthen your baby’s immune system.
Some people’s breasts may leak during this colostrum phase. This is normal. Within three to five days of delivery, your breasts go through a transition where mature milk gradually replaces colostrum. By the time your baby is around two weeks old, your breasts will only be producing mature breast milk.