But usually it's not the length of breast-feeding, but rather incorrect positioning, that causes undue pain. Baby's body should be facing mom, belly to belly. Pull the baby to breast, not the other way around. Place the palm of your hand on the back of baby's head and pull inward. Baby should have the nipple and most of the areola in his or her mouth.
Pillows can really help with positioning.
If you have any problems, get expert help as soon as possible. Don't stop breast-feeding if you get mastitis. If you are returning to work or school after four to six weeks, it's a good idea to get an electric pump. Pumped milk will last four to five days in the refrigerator. Do not start whole milk until age 12 months.