Pumping goes better when the pump suits how often you'll use it, the flange fits, and you pump often enough for your goal. A manual pump is fine for the occasional bottle; a double electric pump suits regular expressing; and a hospital-grade pump is the usual choice if your baby can't breastfeed. Most sessions take about 15 to 20 minutes, suction should never hurt, and if you're replacing breastfeeds you'll need to express about as often as your baby would feed.
This guide covers choosing a pump, checking flange fit, when to start, how often and how long to pump, getting more milk with hands-on techniques, cleaning, and storing what you collect. If you're expressing for every feed, exclusively pumping goes into schedules and supply in more depth.
Which breast pump should you choose?
The Australian Breastfeeding Association's guide to choosing a breast pump matches the pump to how you'll use it:
| Pump | Suits | Good to know |
|---|---|---|
| Manual (hand) | Occasional, short-term use | Cheap, quiet, easy to clean |
| Basic personal electric | Good supply, expressing now and then | Usually one breast at a time |
| Premium personal electric | Regular expressing while apart | Usually double, with a battery |
| Wearable (hands-free) | Expressing while moving around | Quality varies; best once supply is established |
| Hospital-grade (hire) | Exclusive expressing, a baby who can't breastfeed, building supply | Multi-user with your own kit |
A double pump lets you express both breasts at once. The Australian Breastfeeding Association says this can mean more milk in less time, and La Leche League's pumping guide says double pumping takes about 15 minutes, compared with 30 minutes or more doing one breast at a time.
La Leche League also says sharing or borrowing single-user pumps is not recommended. Hospital-grade hire pumps are different: the Australian Breastfeeding Association says they have a closed system, so milk only touches your own collection kit, which is replaced for each user.
How do you know if your breast pump flange fits?
The flange (breast shield) is the funnel that sits on your breast. The Australian Breastfeeding Association suggests measuring the width of your nipple tip and choosing a flange the same size or 1 to 2 mm bigger.
- Good fit: your nipple is centred and sits closely in the tunnel but moves freely.
- Too small: your nipple rubs against the sides, which can cause pain or soreness. Try a bigger size.
- Too big: your areola is pulled into the tunnel, or milk leaks out of the bottom. This can cause pain at the base of the nipple. Try a smaller size.
Sizes vary between brands, so check your pump maker's guide. If pumping still hurts after changing sizes, a lactation consultant can check the fit with you.
When should you start pumping if you're breastfeeding?
It depends on why you're pumping:
- Your baby can't breastfeed yet (for example, premature or unwell): the Australian Breastfeeding Association's guide to expressing for your newborn says start as soon as possible after the birth. Hand expressing usually works best for the small amounts of colostrum at first, and you may move to a pump as your milk increases around days 2 to 6.
- Breastfeeding is going well and you'd like the odd bottle: the NHS introduction to mixed feeding suggests breastfeeding only for the first 6 to 8 weeks if you can, to establish your supply.
- You're going back to work: the Australian Breastfeeding Association's milk stash guide suggests expressing a little each day rather than whole feeds; even 20 mL a day adds up. See building a milk stash.
How often and how long should you pump?
| Your goal | How often | Source |
|---|---|---|
| Baby not breastfeeding (early weeks) | At least 8 times in 24 hours, every 2 to 3 hours by day and at least every 4 hours at night | Australian Breastfeeding Association |
| Replacing feeds while apart | About as often as your baby would feed; every 2 to 3 hours works for most | La Leche League |
| Building supply | Avoid gaps of more than 6 hours | Australian Breastfeeding Association |
| An occasional bottle | One extra session, often after a feed | Practical approach |
The Australian Breastfeeding Association's expressing basics says most sessions last about 15 to 20 minutes, or until milk slows to a drip, and that more than 30 minutes is usually too long. Keep going for a few minutes after the flow stops in case of another let-down.
To boost supply, the Australian Breastfeeding Association suggests shorter, more frequent sessions, such as 5 to 10 minutes at a time repeated several times over an hour or two, rather than longer ones. It also warns that expressing far more than you need can lead to oversupply and breast inflammation.
How can you pump more milk, more comfortably?
The Australian Breastfeeding Association's guide to using a breast pump suggests:
- Start on the lowest suction and turn it up gradually, only as high as is comfortable. Stronger isn't better if it hurts.
- Warm up. A warm shower or a warm washer on your breast for a few minutes, or warming the flange, helps milk flow.
- Massage first. Stroke gently from your chest towards your nipple.
- Compress while you pump. Gentle breast compressions during the session help empty the breast. This "hands-on pumping" may increase output over time.
- Switch sides a few times during the session if you're using a single pump.
- Finish by hand. A few minutes of hand expressing at the end can collect more milk. La Leche League adds that some people do better hand expressing for 1 to 2 minutes before pumping.
- Help your let-down. Pump somewhere quiet and warm, breathe slowly, and look at a photo or video of your baby or hold something that smells of them.
Check the kit is put together correctly and kept upright so milk doesn't run into the tubing, and replace worn parts.
The amount you pump isn't a measure of how much milk you make. The Australian Breastfeeding Association notes babies are usually better at getting milk than pumps. If you're worried about supply, look at your baby's nappies and growth; see is my baby getting enough breast milk?.
How do you clean breast pump parts?
The CDC's breast pump cleaning guide sets out these steps:
- Before pumping, wash your hands with soap and water for 20 seconds. Check the kit for mould or soiling; replace mouldy tubing straight away.
- After pumping, take the kit apart and separate every part that touches your breast or milk (flanges, valves, membranes, connectors, bottles).
- Rinse those parts under running water, then clean them as soon as possible.
- By hand: the CDC's guide to cleaning feeding items says use a basin kept only for feeding items, with soap and hot water and a dedicated brush, not straight in the sink.
- In a dishwasher: put small parts in a closed basket on the top rack and use hot water and a heated drying cycle if you can.
- Air-dry on a clean, unused towel or paper towel. Don't rub or pat parts dry with a tea towel.
Sanitising advice differs by country. The CDC suggests sanitising at least once a day (steam, boiling for 5 minutes, or a dishwasher sanitise cycle), especially for babies under 2 months, premature babies or those with weakened immunity. The NHS guide to expressing says to make sure the pump and container are clean and sterilised before use. The Australian Breastfeeding Association says sterilising pump equipment is usually not needed. If your baby is premature or unwell, follow your hospital team's advice.
Some people rinse parts and keep them in the fridge between sessions. The CDC says there's no evidence this is a safe alternative to washing after every use; if you do it, rinse first and store the parts in a sealed bag.
How should you store pumped breast milk?
Label each container with the date (and time) you expressed it, and store small amounts to reduce waste. Storage times for freshly expressed milk differ between countries:
| Where | Australia (ABA) | UK (NHS) | US (CDC) |
|---|---|---|---|
| Room temperature | 6–8 h at 26°C or less | Not given | Up to 4 h at 25°C (77°F) or less |
| Fridge | 72 h at 5°C or colder | Up to 8 days at 4°C or lower | Up to 4 days |
| Freezer | 2 weeks to 12 months by freezer type | Up to 6 months at -18°C | About 6 months best, up to 12 |
The Australian Breastfeeding Association's storage table gives 2 weeks in a freezer compartment inside the fridge, 3 months in a separate-door freezer and 6 to 12 months in a deep freezer. The NHS says to use milk within 3 days if your fridge runs between 5°C and 10°C. The CDC's storage guide says to freeze straight away if you won't use fresh milk within 4 days. Thawed, warmed and leftover milk have shorter limits; see storing breast milk before you thaw anything.
When should you get help with pumping?
Pumping shouldn't hurt. Talk to a lactation consultant, your GP or a breastfeeding helpline (the Australian Breastfeeding Association on 1800 686 268 in Australia, the National Breastfeeding Helpline on 0300 100 0212 in the UK) if:
- pumping is painful even on low suction, or your nipples are cracked, blistered or bleeding
- you can't find a flange size that feels comfortable
- your output drops suddenly and stays down, or you're worried your baby isn't getting enough
A hot, swollen, painful area on one breast, especially with a high temperature or flu-like feelings, can be mastitis. The NHS mastitis page says to see a GP if it hasn't improved 12 to 24 hours after treating it at home; see mastitis. If your baby has fewer wet nappies or seems unwell, follow the urgent steps in is my baby getting enough breast milk?.
What's worth noting in a pumping log?
For a few days, note the time, how long you pumped, the amount from each side and the suction setting that felt comfortable. Comparing similar sessions, such as mornings with mornings, says more than any single number. A log like this is also useful to bring to a lactation consultant.
