Most women do not need a pump. Purchase or rent after the baby is born and then only when you know what you need it for. Pumps can be used for inappropriate reasons and may not be the most effective tool. For example, a few days after delivery some mothers may have engorgement. For engorgement, reverse pressure softening, or hand expression, usually work much better than a pump. For latch issues, for example, a lactation consult is a better use of your resources so that the underlying problem may be identified and addressed.