How to Catch Leaking Milk While Breastfeeding on One Side

Key Takeaways

• Breastfeeding on one side can trigger milk letdown in both breasts, causing the opposite breast to leak.
• Nursing pads absorb leaking milk, while silicone milk collectors help mums save it for later use.
• A Haakaa Ladybug milk collector fits inside a nursing bra and catches natural leakage without active pumping.
• Collected milk should be transferred into clean storage containers promptly, especially in Malaysia's warm climate.
• Proper cleaning, gentle suction and safe storage help protect collected milk from contamination.

You can catch leaking breast milk while breastfeeding on one side by wearing a silicone breast milk collector over the opposite breast. As your baby nurses, the collector catches milk released during letdown, allowing you to save it instead of losing it to a nursing pad or clothing.

If you've ever noticed your shirt getting wet while feeding your baby, you're definitely not alone.

Many Malaysian mums experience milk leakage, particularly during the early weeks of breastfeeding. Sometimes, the opposite breast starts dripping as soon as your baby latches.

While this is normal, it can feel wasteful when you're already working hard to maintain your milk supply.

Fortunately, collecting that extra milk doesn't mean adding another pumping session.

With a Haakaa milk collector, you can catch naturally leaking breast milk while continuing to nurse your baby comfortably.

Why Does Letdown Occur in Both Breasts Simultaneously?

Milk letdown happens in both breasts because breastfeeding triggers a hormonal reflex that affects both sides of your body.

When your baby starts sucking, nerves in your nipple send signals to your brain. Your body releases oxytocin, a hormone responsible for triggering the milk ejection reflex.

Oxytocin causes tiny muscles surrounding the milk-producing structures to contract, pushing milk towards the nipples.

Because this hormonal response affects both breasts, milk may flow from the opposite breast even when your baby is feeding on only one side.

According to the Australian Breastfeeding Association, leaking from the opposite breast is a common sign of letdown.

Why Is Milk Leakage More Common During Early Breastfeeding?

During the first few weeks after delivery, your body is still adjusting milk production to match your baby's feeding needs.

You might notice leakage when:

• Your baby begins nursing on the opposite breast.
• You wake up after a longer stretch between feeds.
• Your breasts feel particularly full.
• You hear your baby crying or anticipate feeding time.

However, not everyone leaks breast milk.

Some mums experience frequent leakage, while others rarely notice any. Both experiences can be normal, and leakage alone doesn't indicate whether your milk supply is sufficient.

How Much Liquid Gold Is Lost in Traditional Nursing Pads?

Traditional nursing pads absorb breast milk to keep clothing dry, but they don't allow you to recover that milk for feeding.

The amount lost varies between mums. Some experience only a few drops, while others notice more leakage during letdown.

There isn't a reliable universal estimate for daily milk leakage, although small amounts may add up across several feeds.

Consider this hypothetical example:

Milk Leaked Per Feed	Feeds Per Day	Total Daily Leakage
2ml	8	16ml
5ml	8	40ml
10ml	8	80ml
15ml	8	120ml

These figures are illustrations, not measured averages or guaranteed collection amounts.

For mums who experience regular leakage, collecting some of this milk could provide an additional amount for future feeds.

Are Nursing Pads Still Useful?

Absolutely.

Nursing pads remain convenient for managing occasional leakage, especially when you're outside, sleeping or wearing fitted clothing.

The difference comes down to what happens to the milk.

Nursing pads absorb it, while milk collectors allow you to transfer suitable, hygienically collected milk into a storage container.

How Do In-Bra Silicone Shells Catch Leaking Milk Safely?

In-bra silicone milk collectors sit over the nipple and catch breast milk that naturally leaks during letdown.

Unlike conventional breast pumps, passive collectors are designed mainly to collect leakage rather than actively express additional milk.

The Haakaa Ladybug Silicone Breast Milk Collector is specifically designed for this purpose.

Available through Haakaa Malaysia in 40ml and 75ml options, the Ladybug sits inside your nursing bra and uses gentle suction to help maintain its position.

Its flexible silicone design allows milk to collect inside the shell rather than soaking into clothing.

However, avoid excessive or prolonged suction, which may cause discomfort or contribute to oversupply.

How Do You Position a Haakaa Milk Collector Correctly?

1. Wash Your Hands: Make sure your hands and collector are clean before handling breast milk.
2. Prepare the Collector: Check that the silicone shell is clean, dry and undamaged. Close the top plug.
3. Position Over Your Nipple: Place the collector inside your nursing bra, aligning its opening with your nipple.
4. Apply Gentle Suction: Lightly squeeze the collector before releasing it against your breast to create a gentle seal.
5. Begin Breastfeeding: Nurse your baby on the opposite breast while the collector catches natural leakage.
6. Remove and Transfer: Carefully remove the collector after feeding and pour the milk into a clean storage container.

The collector should remain supported by your bra rather than relying on suction alone.

Avoid applying excessive pressure or using suction that causes discomfort.

A properly positioned collector can catch much of the milk that would otherwise leak, although it cannot guarantee every drop will be captured.

What Is the Difference Between a Haakaa Milk Collector and a Haakaa Pump?

Although both products help mums save breast milk, they serve different purposes.

A Haakaa milk collector primarily catches milk that leaks naturally. Meanwhile, a traditional Haakaa silicone breast pump uses suction to actively express milk.

Feature	Haakaa Milk Collector	Haakaa Silicone Pump
Main Purpose	Collect natural leakage	Express breast milk
Suction	Gentle, mainly for positioning	Stronger suction for expression
Placement	Inside nursing bra	Attached directly to breast
Milk Supply Impact	Not intended to stimulate production	Milk removal may influence supply
Best For	Catching opposite-breast letdown	Expressing additional milk

For mums who simply want to stop wasting leaking milk, the Ladybug may be sufficient.

However, if you're building a freezer supply or need to express milk regularly, a dedicated breast pump may be more suitable.

Keep in mind that prolonged suction from a milk collector may also remove more milk than intended.

How Do You Store Collected Milk Throughout the Day?

Collected breast milk should be transferred into a clean, food-grade storage container promptly and refrigerated or frozen according to recommended storage guidelines.

This is particularly important in Malaysia, where outdoor temperatures and unair-conditioned rooms can exceed recommended breast milk storage conditions.

According to the US Centers for Disease Control and Prevention (CDC), freshly expressed breast milk has the following recommended storage limits.

Storage Method	Recommended Duration
Room Temperature (25°C or Cooler)	Up to 4 hours
Refrigerator (4°C)	Up to 4 days
Freezer (-18°C or Colder)	Within 6 months is best; up to 12 months acceptable
Insulated Cooler With Frozen Ice Packs	Up to 24 hours

These guidelines apply to freshly expressed milk handled hygienically.

Milk collected in a wearable shell may become warmer than room temperature because the collector rests against your body. Therefore, the four-hour room-temperature guideline should not be treated as a safe wearing duration.

For milk intended for feeding, empty the collector after each nursing session and refrigerate the milk promptly.

Read More: Top 10 Silicone Breast Milk Collectors for Nursing Mothers

Can You Combine Milk Collected During Different Feeds?

Yes, provided the milk has been collected hygienically and stored safely.

However, freshly collected warm milk should be cooled before being combined with previously refrigerated milk.

For example, if you collect 20ml during a morning feed and another 15ml later, refrigerate the second batch separately until it has cooled.

When combining milk from different sessions, follow the storage timeline of the oldest milk.

How Should Malaysian Working Mums Transport Collected Milk?

An insulated cooler bag with frozen ice packs can make transportation easier.

Keep collected breast milk chilled during long commutes, especially around Kuala Lumpur, Petaling Jaya or other busy urban areas.

Once home, transfer the milk to the refrigerator or freezer promptly.

Never rely on the four-hour room-temperature guideline when temperatures exceed 25°C.

How Do You Clean and Maintain a Haakaa Milk Collector?

Proper cleaning helps prevent milk residue and bacteria from accumulating inside the collector.

For the Haakaa Ladybug, the manufacturer recommends washing with warm, soapy water and using soft brushes or sponges.

Haakaa also recommends steam sanitising or boiling for two to three minutes, following the specific product instructions. Always clean the collector before sanitising and check that your model is suitable for the chosen method.

A few habits can make milk collection less hygienic than intended:

• Reusing Without Washing: Clean the collector after each use rather than adding fresh milk to leftover residue.
• Using Harsh Scrubbers: Avoid abrasive tools that could scratch silicone surfaces.
• Storing While Damp: Allow the collector to dry completely before storing it.
• Ignoring Damage: Replace collectors showing cracks, tears or deterioration.

CDC guidance recommends sanitising milk collection equipment at least once daily for extra protection.

This is especially important for babies younger than two months, premature infants or those with weakened immune systems. For older, healthy babies, daily sanitising may not be necessary when equipment is thoroughly cleaned after every use.

When Is the Best Time to Wear a Milk Collector?

The most convenient time is often during breastfeeding, when your opposite breast is more likely to release milk.

Some mums also experience leakage between feeds, although continuous wear or excessive suction should be avoided.

Morning feeds: Your breasts may feel fuller after a longer stretch between feeds, making morning nursing a convenient collection opportunity.

While nursing at home: You can wear a collector on the opposite breast without significantly changing your routine.

During daytime activities: A collector may help manage leakage during light activities, provided it remains securely positioned and is emptied regularly.

For overnight use, ordinary nursing pads may be more practical, particularly when you cannot monitor or empty the collector safely.

What Should You Do If Your Milk Collector Stays Empty?

An empty milk collector doesn't automatically indicate low milk supply.

Some mums naturally experience very little leakage, particularly once breastfeeding becomes established.

Others notice leakage only at certain times of the day.

Milk leakage isn't a reliable measurement of how much milk your baby receives.

If your baby is gaining weight appropriately, producing enough wet nappies and feeding effectively, minimal leakage is usually not a concern.

However, if your baby has poor weight gain, fewer wet nappies than expected or difficulty feeding, consult a healthcare professional or lactation consultant.

Is Catching Leaking Breast Milk Worth It?

Catching leaking breast milk while breastfeeding on one side is a convenient way to reduce waste without adding unnecessary pumping sessions.

For mums who experience regular opposite-breast leakage, an in-bra silicone collector offers a practical way to save naturally released milk. Just remember that gentle suction, proper cleaning and safe storage are essential.

At Haakaa Malaysia, we offer practical breastfeeding essentials, including the Haakaa milk collector, to help mums manage leakage more comfortably. Explore our range as a breast pump supplier in Malaysia to find suitable milk collectors, Haakaa pumps and breastfeeding accessories for your daily routine.

Sources

• Australian Breastfeeding Association — The Let-Down Reflex and Your Milk Flow
• Australian Breastfeeding Association — How Breasts Make Milk
• Australian Breastfeeding Association — Leaking Breasts
• Centers for Disease Control and Prevention — Breast Milk Storage and Preparation
• Centers for Disease Control and Prevention — How to Clean and Sanitize Breast Pumps

Medical Disclaimer: This article is for general information only and does not replace advice from a healthcare professional or qualified lactation consultant. If you have concerns about your baby's feeding, growth or the safety of stored breast milk, seek personalised guidance.

Frequently Asked Questions About How to Catch Leaking Milk While Breastfeeding on One Side

Can I Collect Breast Milk While Feeding My Baby on the Other Side?

Yes. Wearing a silicone milk collector over the opposite breast allows you to catch milk released during letdown while your baby nurses, helping reduce leakage and save milk for later use.

Does a Haakaa Milk Collector Increase Breast Milk Supply?

The Haakaa Ladybug is designed to collect naturally leaking milk rather than actively pump milk. However, prolonged or repeated suction may remove additional milk and potentially contribute to oversupply. Use gentle suction and avoid unnecessarily long wearing periods.

How Long Can I Wear a Haakaa Milk Collector?

Haakaa's regional recommendations vary. Its New Zealand guidance recommends no longer than two hours at a time because milk can warm against your body.

For milk intended for feeding, empty the collector after each nursing session and refrigerate promptly, particularly in Malaysia's warm climate.

Can I Use a Haakaa Milk Collector Instead of Nursing Pads?

Yes, when you want to collect leakage rather than absorb it. However, nursing pads may be more practical during sleep or situations where regularly emptying and cleaning a collector isn't convenient.

Can I Freeze Milk Collected With a Silicone Milk Collector?

Yes, provided the milk has been collected hygienically and stored promptly. Transfer it into a clean, freezer-safe breast milk container, label it with the collection date and follow recommended freezing guidelines.

Why Am I Not Collecting Much Milk From My Opposite Breast?

Milk leakage varies naturally between mums and feeding sessions. Some breasts leak very little, even when milk production is adequate. Low collection volume alone doesn't indicate low milk supply.