According to official guidelines, lactating women suffering from mastitis symptoms or candidiasis, should continue to breastfeed. Breast milk during mastitis or Candidiasis is considered safe for full term healthy infants. Thrush shouldn't prevent you from nursing your baby, though it can make it painful. Nurse frequently for shorter amounts of time. It is important to remember that the mother’s thrush can affect the baby, and vise versa. It is necessary to take care of you both at the same time to prevent re-infection.