Clogged Milk Duct Popping? What’s Normal (and What’s Not)

If you feel a sudden popping sensation while breastfeeding, don’t panic—you’re not the only one. Feeling a clogged milk duct release is more common than you might think. This article breaks down what’s really going on and walks you through what to do next.

What Is a Clogged Milk Duct?

Your breasts have a network of tiny tubes (milk ducts) that carry milk from the tissue where it’s made to your nipple. Sometimes, one of those ducts gets backed up—usually because milk isn’t draining well. That’s a clogged or plugged duct.

You might feel:

• A hard lump that doesn’t go away after feeding or pumping
• Tenderness in one area
• Skin that feels warm or slightly red

It usually affects just one spot and comes on gradually. And yes, it can be painful.

Can You Actually Feel a Milk Duct Pop?

Short answer: yes, sometimes. If you’ve had a clogged duct and then, during nursing or pumping, felt a sudden release—maybe a small snapping or “popping” sensation followed by milk flowing more freely—you likely felt the blockage clear.

What you’re feeling isn’t the duct “bursting” or anything harmful. It’s more like a stuck bit of milk (called a milk plug) finally moving through. Some moms describe it as a pinch followed by sweet relief. Others don’t feel it at all—just notice that the lump is gone.

But here’s the key: feeling that pop is fine if you didn’t force it.

Is It Safe to Pop a Blocked Duct

It’s tempting. You’re in pain, you just want it gone. But manually trying to “pop” anything in your breast can do more harm than good.

Risks of Popping a Clogged Milk Duct

• You might worsen inflammation or bruising
• You could cause a deeper blockage or even mastitis

Milk Blister vs. Clogged Duct

Though they can be related, a milk bleb (or blister) and a clogged duct are not the same. A milk bleb is a tiny white or yellowish spot on the nipple caused by a blocked milk pore, often right at the surface. A clogged duct, on the other hand, is a blockage deeper in the breast tissue, typically felt as a sore lump.

Sometimes, when a bleb won’t clear with warm compresses or nursing, people are advised to pop it to let the milk flow. While this might sound like a quick fix, it’s not something you should do at home. Popping a bleb with a needle or squeezing it aggressively can lead to infection, bleeding, or even damage to the nipple. If a milk blister is stubborn or painful, it’s best to have it opened in a sterile setting by your healthcare provider or lactation consultant, who can do it safely and give you guidance to prevent it from coming back.

Distinguishing between a clogged duct and a milk blister is important because their treatments differ significantly.

What to Do If You Feel a Clogged Milk Duct Pop

If you feel a sudden release and things improve, that’s good news. It means milk is moving again. Here’s what to do next:

• Keep nursing or pumping to fully drain the breast
• Massage gently from the outer lump toward the nipple
• Use a cold compress after feeding to reduce swelling

But if you feel a pop and then things don’t get better, watch for signs like:

• Sharp or worsening pain
• Red streaks or swelling
• Fever or chills
• Pus or blood from the nipple

These are red flags for mastitis or infection. Don’t wait—call your doctor or midwife.

Clogged Milk Duct Remedies

Clogged ducts can usually be treated at home with gentle care and consistency. Here’s what can help:

• Remove as much milk as possible by breastfeeding or pumping frequently
• Use warm compresses and Epsom salt soaks to encourage milk flow
• Massage your breast before, during, and after feeding
• Try vibration (like an electric toothbrush) to help break up the clog
• Adjust your breastfeeding position—dangle feeding can be effective
• Apply cold compresses after feeds to reduce pain and swelling
• Consider lecithin supplements to reduce recurrence
• Explore therapeutic ultrasound if the duct remains blocked after two days

In more persistent or severe cases, such as galactoceles (milk-filled cysts), a doctor might recommend aspiration—removing the blockage with a needle under supervision.

Preventing Clogged Ducts Before They Start

Prevention is all about keeping milk moving freely.

• Don’t skip feedings or pump sessions
• Make sure baby has a good latch
• Vary your nursing positions
• Avoid tight bras, underwires, or pressure from bag straps
• Stay hydrated and rested
• Wean gradually if you’re transitioning away from breastfeeding
• Manage stress as best you can—it matters more than most think

Some moms are just more prone to clogs. If you’re getting them often, talk to a lactation consultant about possible causes, like oversupply or shallow latch.

When to Get Help

One clogged duct usually isn’t a reason to panic, but don’t suffer through it alone.

Call your provider or IBCLC if:

• The clog lasts more than 48 hours
• You feel feverish or unwell
• You keep getting clogs in the same spot
• You’re unsure whether it’s a clogged duct or mastitis

Help is out there, and the right support can make a huge difference.

Final Thoughts

The good news? Most clogs clear up quickly with the right care.

So if you feel that clogged milk duct popping mid-feed, take it as a sign your body is working to get back on track.

Resources

• Find a breastfeeding support group near you.
• Milkology Breastfeeding Class – Affordable, video-based online course to help you master breastfeeding at your own pace.

References

• Clogged Milk Duct: Causes, Symptoms & Treatment — Cleveland Clinic (2022-10-03)
• Clogged Milk Duct Popping: When All Else Fails — Healthline (2021-02-24)
• What You Need to Know About Clogged Milk Ducts — Lactation Network (2024-11-12)
• A Five-Step Systematic Therapy for Treating Plugged Ducts and Mastitis in Breastfeeding Women — Asian Nursing Research (2021-08)