Occasionally, a breastfeeding woman may notice blood in her breast milk. This situation can be observed after expressing milk or when the baby spits out a small amount of breast milk during nursing. This is a common concern for many breastfeeding mothers, especially those nursing their first child.

Mastitis is an infection of the breast that is more commonly seen in women who are breastfeeding. However, this condition can still develop after you have weaned your child, or at any other time, even during pregnancy