Whether or not it is okay to supplement formula milk for a baby while breastfeeding is a question of many parents, especially in cases where the source of breast milk is limited.

Postpartum engorgement is a condition in which the breasts become hard, swollen, and painful due to an overproduction of breast milk. Postpartum engorgement can cause the breasts to become large, full, lumpy, and tender. The swelling may extend into the armpits, and the veins on the surface of the breasts may become more visible.