Yes, breasts can hurt when filling with milk, a common and often painful condition called engorgement, which happens when they become overly full with milk, blood, and fluids, making them feel hard, heavy, swollen, and tender, especially in the first few days after birth as milk "comes in". While some discomfort is normal, severe pain, tightness, or difficulty latching requires frequent feeding, gentle massage, and sometimes cold compresses to relieve pressure and help milk flow, say Australian Breastfeeding Association.
The second stage begins just a few days after delivery, and it's when your milk starts “coming in.” Your body prepares to ramp up milk production by sending more blood and lymph to your breasts. This leads to an increased volume of fluid in between your breast tissues, which can cause pain and other symptoms.
Breast engorgement is when, for whatever reason, your breasts become overly full. They may feel hard, tight and painful. In the early days, engorgement can be due to your milk coming in.
Some people feel what's called ``refill sensations'' or ``refill pain.'' Basically it's feeling the blood and lymph starting to flow in your breasts as your body gears up to make more milk between feedings. Most people don't really feel it but some do!
For example, mastitis symptoms tend to be more severe than those associated with engorgement or plugged ducts, while mastitis may also be accompanied by a high temperature and a general feeling of malaise.
The start of mastitis often feels like a painful, tender, hot, swollen, and firm lump or area in the breast, accompanied by flu-like symptoms such as fever, chills, body aches, and fatigue, coming on suddenly. You might notice redness, shiny skin, or red streaks on the breast, and the pain can worsen during or after feeding. It's a feeling of being unwell combined with localized breast inflammation, signaling the need for early action.
Hand expression or small volume milk removal with an hand-held pump can cause temporary relief. Do NOT pump to “empty” the breast as this simply tells the breast to make more milk, upregulate blood supply, and worsens the engorgement cycle.
To put a number on it, it usually takes about 20 to 30 minutes after feeding to generate enough milk for your baby, and about 60 minutes to replenish fully. The more often your baby feeds, and the more they empty your breasts, the more milk your body will produce.
The 30-30-30 pumping method is a power pumping technique to increase milk supply by mimicking cluster feeding: pump for 30 minutes, rest for 30 minutes, then pump for another 30 minutes, totaling a 90-minute session designed to signal your body to make more milk. It's a demanding but effective strategy for building supply, often done once daily, focusing on frequent milk removal to boost demand, with consistency and patience key for results.
Signs your breast milk is flowing
The "4-4-4 rule" for breast milk is a simple storage guideline: fresh milk is good for 4 hours at room temperature (up to 77°F/25°C), for 4 days in the refrigerator (39°F/4°C or colder), and up to 4-6 months (or longer) in a standard freezer (0°F/-18°C). It's a handy mnemonic, though some organizations like the CDC recommend up to 6 months in the freezer and the AAP up to 9 months, with deeper freezers offering even longer storage.
If your breasts feel heavy and full, but your milk is still flowing, it may help to put a warm cloth or towel on your breasts for comfort. Apply a warm compress before breastfeeding. Only apply warmth for 3 to 5 minutes. Using heat for too long can cause swelling and tissue damage.
Remember, not all breastfeeding parents get engorged when their milk comes in. Those that do, though, typically only experience engorgement for 12-48 hours after their milk comes in.
Signs of a blocked or narrowed duct
When stimulated by oxytocin, these cells contract, squeezing the milk from the alveoli into the milk ducts and out toward the nipple. This internal muscular contraction and the sudden increase in milk flow and pressure within the ducts are what cause that noticeable tingle or sensation of fullness you feel.
Although sore or tender nipples are common during the first few days of breastfeeding, it should improve. Normal soreness or pain usually occurs for about a minute when the baby first latches on to the breast. For minor discomfort, you can try home treatment.
If your mixed feeding involves exchanging some breastfeeds for baby formula, then your baby will not receive as many benefits as they normally would if they were exclusively breastfed. As such, their immune system may not be as well protected from certain infections1.
It is particularly important that you express at least once during the night. This is because the levels of the hormone prolactin, which drives milk production, are higher overnight. Prolactin levels seem to be highest between 2-6am.
Studies suggest that, on average, a baby can consume between 2 to 3 ounces (60-90 ml) of milk from one breast in 10 minutes. However, this can vary widely among infants and mothers. Some babies may take in as little as 1 ounce (30 ml), while others can consume 4 or more ounces (120+ ml) in the same period.
Audible Changes. Pay attention to the sounds you hear during pumping. At the beginning of a session, you might hear the rhythmic sound of milk being expressed. As your breasts empty, this sound may change to a softer and quieter rhythm, eventually tapering off.
Goal is to have at least 8 cups (or 64 ounces) of water and/or other fluid each day. Some mothers may need more or less. It is important to listen to your body and drink when you feel thirsty. Drinking excess fluids will not help increase your milk supply.
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Negative experiences included pain, increased milk supply concern, reduced time for other activities and frustration with inconsistent advice from clinicians about pumping.
Relief for Engorgement
Put a warm, moist washcloth on your breasts or take a warm shower for 10-20 minutes.
Wake your baby for a feed if your breasts become full and uncomfortable (especially at night). Ensure your baby is positioned correctly and attached well. Hand express a little, if needed, to help your baby attach well to your breast. Avoid giving your baby any fluids other than breast milk.