when does your milk come in

Breast milk typically "comes in" between 2 to 5 days after giving birth. This means that after the initial production of colostrum (the first milk made during pregnancy and right after birth), the milk supply increases and transitions from colostrum to transitional milk and then to mature milk. During this time, many mothers notice their breasts become fuller, heavier, warmer, and sometimes sore or engorged. The milk changes from a thick, yellowish colostrum to a thinner, whiter mature milk. This process varies but usually occurs within the first week postpartum. If milk production is delayed beyond a few days, it is usually not a cause for concern, but consulting a healthcare provider is advised to ensure the baby is receiving enough nutrition.