It is easy to express breastmilk by hand. This simple skill can be
very useful:
You can express your milk and leave it with a family member or
baby sitter to feed your baby while you're away.
You can express breastmilk to maintain
your milk supply after you return to work, or if your baby has
to be hospitalized and cannot nurse for a while. By emptying your
milks regularly, you'll send your body the signal to produce more
milk. When your baby is able to nurse again, you'll be ready.
If you have a premature baby, it is particularly important to
give her or him your milk. Many premature babies cannot nurse,
however. Expressing your milk lets you overcome this problem.
You can express a little milk for engorgement
relief. This will also make your breast softer so your baby can
latch on more easily.
If you are sick and worried about transmitting germs or
harmful chemicals or radiation to your baby, you can express a
little breastmilk and have it checked at the hospital. Chances are
your milk is fine and you'll be able to breastfeed. Otherwise, you
can continue expressing milk to keep up your milk supply until
your milk is safe again.
As I have no personal experience with milk expression, I refer you
to the web pages below for information on milk expression
techniques: