Expressing your breast milk

Expressing your milk will mean your baby can reap the benefits of breast milk from a bottle, and will give you a break too.


Why express?

There are several reasons why you may want to express your milk. These include:

  • To ease the discomfort of full breasts
  • To help your baby latch on, which can be difficult if your breasts are too full
  • To maintain your milk supply and give your baby the benefit of breast milk if they are in special care
  • To allow someone else to feed your baby if you are going out, back to work, or need a break.


When can I start?

Ideally it is best to wait until breast feeding is properly established before you start to express. Getting the hang of expressing can take practice, and you may only get a trickle of milk at first. Experiment with expressing at different times of day. Many women find early in the morning, when your milk supply is highest, is a good time. Or you could try after a warm bath. You could also try immediately after a breast feed, or express from one breast while your baby feeds from the other.

To stimulate your let-down reflex, it can be helpful to express with your baby nearby. Or, if you are not with your baby, looking at a photo of them can help to get your milk flowing.


How do I express?

While it is possible to express by hand, the most efficient way to express is with a breast pump. There are two main types:

  • Manual pumps, which require you to squeeze a handle
  • Automatic pumps, which run off batteries or mains electricity leaving you hands free

You can also choose between a single pump or a double one that allows you to express from both breasts at the same time.


Expressing and storing your milk safely

To avoid tummy upsets, you should sterilise all parts of your breast pump before use. You can store the milk in a sterilised bottle with a sealed top, or a special milk storage bag or lidded container, clearly labelled with the date.

Expressed breast milk should be put in the fridge straight away and can be kept for up to 48 hours in the fridge, up to a week in the freezer compartment of the fridge, or up to three months in the freezer. Thaw it in the fridge or by standing the container in lukewarm water, and use it as soon as possible and always within 24 hours of defrosting.


Can I combine breast and bottle?

Once breast feeding is established, mixed feeding where you combine breast and bottle, can be a practical solution if you are going back to work or need someone else to feed your baby occasionally.

The Department of Health recommends exclusive breast feeding for the first six months. If you are planning to combine breast and bottle, giving your baby expressed milk in a bottle is the healthiest option. If you use formula, bear in mind that it will affect the amount of breast milk you produce.