Babies who are given a pacifier or bottle in the early weeks of breastfeeding may become confused when faced with their mother's breast. The result: Baby may not be able to latch on correctly or may reject the breast completely. This means that he may not get enough milk and your breasts can become engorged from not emptying. How to Prevent It: Don't give your baby a pacifier or bottle until your nursing routine is firmly established -- usually at least three to four weeks after delivery. How to Treat It: Depending on how long your baby has experienced nipple confusion, you may want to contact a lactation consultant for advice. In the meantime, monitor your baby's diapers to determine whether he's getting enough to eat.