Clogged milk ducts are one of those breastfeeding curveballs that can leave you sore, frustrated, and wondering how to get things flowing again. The good news? With the right know-how, they’re usually temporary and fixable. Think of this as your quick guide to understanding, preventing, and treating clogged ducts so you can get back to comfortable, effective feeds.
Why Clogged Ducts Happen
A clogged duct happens when milk flow gets obstructed in one part of the breast. Milk builds up behind the blockage, creating a firm, tender lump. It can feel sore to the touch, look a little red, or cause discomfort when your baby latches. Common causes include skipped or shortened feeds, pressure from clothing or sleep positions, or a latch that isn’t fully draining milk. Oversupply can sometimes contribute as well.
How To Prevent Clogs
Hand Expression- The best thing you can do to prevent clogged ducts is using your hands and becoming familiar with your breasts. Learning hand expression can be a game changer for so many reasons…preventing clogs being one of them. Massaging regularly during feeding or pumping is a great way to stay on top of breast health! Here is a helpful video on how to hand express.
Regular Feeding or pumping- Going too long in between feeds or skipping feeds and not expressing can be a culprit of clogged milk ducts. Especially in the early days, it's helpful to feed your baby on demand and follow their cues. As
Wear Properly Fitting Bras- Avoid tight bras or clothing that may compress your breasts. Wearing a tight sports bra or a constrictive bra usually doesn't end well if you are prone to clogs.
How to Spot a Clog
The earlier you recognize a clog, the easier it is to clear. Signs may include:
• A firm spot or wedge-shaped area in the breast
• Localized tenderness in one spot
• Slower milk flow from that side
• Temporary relief after feeding, with firmness returning if milk isn’t fully removed
Tips to Clear a Clog
Clearing a clogged duct is about keeping milk moving. Start feeds on the affected side so your baby can work on it first. Adjusting your nursing position can sometimes give just the right angle to ease drainage. Warm compresses or a shower before feeding loosen things, and gentle massage during nursing can help. If you are pumping make sure to pump using hands-on techniques. And remember the basics: rest, hydration, and lowering stress all support your body’s ability to heal.
Video on Hands on Pumping Here!
Heat or Ice?...A Common Question!
There is a lot of mixed info when you google how to clear up a clogged milk duct. This is because of the recent change in protocols. Here is what I find to work best….
Before a feed: Warmth is usually best (like a warm shower, heating pad, or warm compress) because it helps milk flow.
After a feed: Cold is your friend! It can reduce swelling and inflammation in the breast tissue, making you more comfortable and giving the duct a chance to calm down.
Step by Step Routine if you have a Clog:
1. Warm it up first (before a feed):
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Use a warm compress, heating pad, or hop in the shower with warm water running over your breast. This helps soften things up and gets milk flowing.
2. Feed or pump:
- Start feeds on the affected side if you can—baby’s suction is stronger at the beginning.
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Try different positions (like football hold, laid-back, or dangle feeding) so your baby's chin points toward the clog. That angle can really help drain it.
3. Gentle massage (while feeding):
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Think “firm but kind.” Use your fingers to stroke from behind the clog toward the nipple.
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Don’t go overboard—too much deep, aggressive massage can actually irritate tissue.
4. After feeding:
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Apply a cold compress, ice pack, or even a bag of frozen peas wrapped in a cloth for 10–15 minutes. This reduces swelling and soothes discomfort.
5. Support the flow:
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Rest, stay hydrated, and go braless or wear a supportive (but not tight) bra.
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Some people find sunflower lecithin helps keep milk a little “less sticky,” so clogs happen less often.
What to Avoid
• Aggressive squeezing and massaging, which can bruise breast tissue
• Over-pumping “just in case,” which can worsen oversupply
• Ignoring symptoms like pain, redness, or fever, which may indicate mastitis
When to Reach Out
Most clogs resolve within a day or two, but if a lump persists or symptoms get worse, reach out. Fever, chills, or flu-like feelings are signs to contact your healthcare provider or an IBCLC. Catching things early prevents more serious complications.
FAQ
Is a clogged duct always mastitis?
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No, not necessarily. A clog is simply a blockage without infection, but untreated clogs can sometimes lead to mastitis.
Can I keep breastfeeding if I have a clogged duct?
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Yes—nursing often is one of the best ways to clear it.
Will lecithin help?
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Some parents find sunflower lecithin, a supplement that helps thin milk fat, lowers the risk of recurring clogs. Check with your provider before starting any supplement.
The Bottom Line
Clogged ducts are uncomfortable, but usually short-lived when managed quickly. By feeding frequently, caring for your body, and knowing when to seek help, you can move through them smoothly and keep your breastfeeding journey on track.
