Toward the end of the first week, before breastfeeding has become fully established, your breasts may become overfull and painful and quite hard to the touch. If this happens, your baby won’t be able to latch on successfully. Make sure you wear a good bra to minimize discomfort, and gently express some milk before feeding to relieve the fullness. Having warm baths will also help relieve the discomfort by promoting milk flow.