Why Does Breastfeeding Hurt? Causes of Pain and How to Fix It

Breastfeeding pain is almost always a sign that something needs adjusting, usually a shallow latch, rather than an inevitable part of feeding that you have to endure. A deep, comfortable latch should feel like a strong tug, not a pinch, and when it hurts there is nearly always a fixable reason behind it.

I wish someone had told me this with my first baby. I had absorbed the idea that breastfeeding just hurt at the start and that you toughed it out, so I spent two weeks dreading every feed with cracked, bleeding nipples before anyone watched me feed and fixed the latch in about five minutes. The pain was information I had been taught to ignore. Here is what that pain is usually telling you, how to tell the causes apart, and when to get help, all checked by a lactation consultant.

Should breastfeeding hurt?

No, not persistently. Once feeding is going well, it should be comfortable, and ongoing pain is a sign to look closer rather than to push through. A brief, fading discomfort as the baby latches in the first week or two can be normal while your nipples adjust, but it should ease within the first 30 seconds of the feed and should not leave cracks, bleeding, or misshapen nipples.

The single most useful thing to know is that pain is feedback. A baby feeds many times a day, about 8 to 12 times in 24 hours in the early weeks, so a problem that hurts a little each feed quickly becomes a problem that hurts a lot. Catching it early saves you days of unnecessary suffering. The foundation of the whole picture is in our pillar guide to breastfeeding.

The most common cause: a shallow latch

By far the most common reason breastfeeding hurts is a shallow latch, where the baby takes mostly the nipple instead of a large mouthful of breast. When the latch is shallow, the nipple is compressed against the hard roof of the mouth and pinched with each suck, which causes pain and damage. In a deep latch, the nipple sits far back toward the soft palate where it is not squashed.

A good latch has a wide-open mouth, lips flanged outward like a fish, the chin pressed into the breast, and more of the underside of the areola in the mouth than the top. If feeding hurts, the fix is usually to gently break the suction with a clean finger and try again rather than to grit your teeth. Our step-by-step guide to how to get a good latch walks through it, and trying different breastfeeding positions, such as laid-back or rugby hold, often makes a deep latch easier to achieve.

Other causes of breastfeeding pain

When the latch is good and it still hurts, or when pain appears suddenly after a comfortable start, there is usually a specific cause to identify:

• Engorgement: in the early days, often around day 3 to 5 as the milk comes in, the breast can become hard, full, and tender, which also makes it harder for the baby to latch.
• Sore or cracked nipples: damage from an earlier shallow latch can keep hurting until it heals; see sore and cracked nipples.
• Thrush: burning, itchy, or stinging nipples, sometimes shiny or flaky, often appearing after a course of antibiotics; covered in thrush and breastfeeding.
• Tongue-tie: a tight band under the tongue that can stop some babies opening wide or staying deeply latched, keeping the latch shallow no matter what you try; see tongue-tie and breastfeeding.
• Vasospasm: the nipple blanching white and then stinging or throbbing after a feed, often triggered by cold, where the small blood vessels tighten.
• Blocked duct or mastitis: a tender lump means a blocked duct; a hot, painful, red area with flu-like feelings may be mastitis.

How to tell which one you have

The pattern and timing of the pain are the best clues. Pain right at the latch that eases once the baby is on tends to be positioning. Pain through the whole feed, with a pinched or lipstick-shaped nipple afterward, points to a shallow latch. Deep, burning, or stabbing pain between feeds, often in both breasts, suggests thrush. A blanching white nipple that stings afterward suggests vasospasm. A tender lump is a blocked duct, and a hot red area with feeling unwell is mastitis.

You do not have to diagnose yourself perfectly. The point is that breastfeeding pain is rarely random, and naming the likely cause helps you and your supporter aim the fix.

When to get help

Get your latch watched early rather than waiting, because most breastfeeding pain is fixable quickly with the right pair of eyes. A midwife, health visitor, or IBCLC lactation consultant can spot in minutes what is hard to see for yourself. Ask for help if feeding hurts beyond the first latch, if your nipples are cracked, bleeding, or misshapen after feeds, or if you have burning or stinging pain that does not settle.

Seek medical help promptly if you develop a hot, painful, red area on the breast together with flu-like symptoms or a fever, as that can be mastitis and may need antibiotics if it does not settle within 24 hours or you feel unwell. Pain that drags on is also worth taking seriously for your own sake; the toll it takes is real, and the emotional side of breastfeeding matters as much as the mechanics.

This is general information and not a substitute for advice about your own situation. If feeding hurts, please get it checked. It made all the difference for me, and almost no one should have to feed in pain.