Expressing and storing breast milk

Expressing — removing milk by hand or with a pump — gives you flexibility: a partner can give a feed, you can build a small stash before going back to work, and it can relieve engorgement or keep your supply up if your baby can’t feed directly for a while.

There’s no need to express in the early weeks unless there’s a reason to; feeding directly establishes your supply best. When you do start, hand expression is a handy skill (and free), while electric or manual pumps are faster for regular expressing. Mornings often yield more, and expressing after or between feeds — when your breasts aren’t already drained — builds a little extra.

Hygiene matters: wash your hands, use clean equipment, and store milk in clean, sealed containers or proper milk-storage bags, labelled with the date. Freshly expressed milk separates as it stands, with the cream rising to the top — that’s completely normal, and a gentle swirl mixes it back together.

As a general guide, freshly expressed breast milk keeps safely for a few days in the fridge and for several months in a freezer — but the exact times matter, so check current healthdirect or Australian Breastfeeding Association guidance for the specifics. Store it toward the back of the fridge or freezer, not in the door, where the temperature is steadiest.

To use stored milk, thaw frozen milk in the fridge or under cool then warm running water, and warm it by standing the container in warm water — never in the microwave, which heats unevenly, can scald your baby, and damages the milk. Use thawed milk within the recommended window, and don’t refreeze it.

A few practical pointers. To hand express, cup your breast with your thumb and fingers a few centimetres back from the nipple, press gently back toward your chest, then roll forward — rhythmically, moving around the breast. For regular expressing, a manual pump is cheap and quiet while a double electric pump is faster, and hospital-grade pumps can be hired if you need to build supply or your baby can’t yet feed directly. If you’re combining expressing with breastfeeding, ask whoever feeds your baby to use paced bottle feeding — bottle held more horizontally, with frequent pauses — which keeps the flow slow and baby-led, so your baby moves happily between breast and bottle. Keep your pump parts clean and dry between uses.

If you’re expressing to return to work or to boost your supply, a lactation consultant or the ABA helpline (1800 686 268) can help you build a routine that fits your life. It’s a learned rhythm, and it gets easier with practice.