During pregnancy, your breasts change to prepare to feed your baby.
After your baby is born, hormones signal your body to begin making milk. Your body does not know that your baby has passed away, and it will continue to make milk.
Your first milk is called colostrum. Colostrum will transition to milk at about 3 to 5 days after birth. Your breasts may become full, firm, or uncomfortable, and you may notice milk leaking.
Milk production is more common after a pregnancy loss later in pregnancy, although it can still happen earlier as well.