A clicking sound during breastfeeding means your baby is repeatedly breaking the seal between their mouth and your breast. Each time suction is lost and re-established, you hear that small click, cluck, or chuck. The good news: in most cases, adjusting your baby’s latch or positioning solves the problem. But persistent clicking can signal something structural, like a tongue tie, that needs professional evaluation.
What Causes the Clicking Sound
Your baby needs to maintain steady suction throughout a feed. Their tongue extends over the lower gum, cups the breast, and creates a vacuum that draws milk out. Clicking happens when something disrupts that vacuum, even briefly. The tongue retracts, the seal breaks, air rushes in, and you hear the click.
Several things can cause this. Poor positioning is the most common and easiest to fix. If your baby isn’t brought close enough to the breast or their head is turned at an angle, they can’t maintain a deep, stable seal. Fast milk flow is another trigger: some mothers have such a strong let-down that the baby pulls off or adjusts their mouth to manage the volume, breaking suction in the process. And then there are structural causes like tongue tie, where a short or tight band of tissue under the tongue physically prevents the baby from keeping their tongue extended long enough to sustain suction. The tongue “snaps back,” suction breaks, and you hear the click.
Why It Matters Beyond the Noise
Occasional clicking, especially at the start of a feed when your baby is getting settled, is normal and not a concern. Persistent clicking throughout most feeds is different. Every time the seal breaks, your baby swallows air along with milk. Research on infants with tongue and lip ties has found that this repeated air swallowing (aerophagia) correlates with reflux symptoms, post-feed fussiness, and excessive gas. If your baby seems unusually gassy, spits up frequently, or is irritable after feeds, clicking may be part of the picture.
Clicking also affects how efficiently your baby transfers milk. A shallow or unstable latch means less milk removed per feed, which can eventually show up as slow weight gain. On your end, a poor seal often translates to nipple pain and damage. One telltale sign: if your nipple comes out of your baby’s mouth looking flattened on one side, like the angled tip of a lipstick tube, that compression means the latch wasn’t deep enough. Some parents live with the lipstick shape for months without pain, but when it’s paired with clicking and soreness, it’s a clear signal to work on the latch.
Fix Your Positioning First
Before anything else, check the basics. Your baby’s body should be fully facing yours, with their ear, shoulder, and hip in a straight line. Their head shouldn’t be turned to the side to reach the breast. Bring the baby to the breast rather than leaning the breast toward the baby.
Try an asymmetric latch: position your baby so their chin touches your breast first and your nipple points toward their upper lip, not straight into the center of their mouth. This encourages them to open wide and take in more breast tissue from below. When the mouth opens wide, the latch is deeper, suction is more stable, and clicking often stops immediately.
A laid-back or reclined position can also help. Lean back comfortably and let your baby lie tummy-down on your chest, using gravity to help them stay close to the breast. This position gives babies more control over how they latch and can naturally encourage a deeper seal. It’s especially useful for newborns who are still learning to coordinate sucking, swallowing, and breathing.
Managing a Fast Let-Down
If the clicking starts a minute or two into the feed, right when your milk lets down, flow speed is likely the issue. Your baby breaks suction to cope with the rush of milk, sometimes choking or gulping at the same time.
A few strategies help. Let your baby latch and nurse until you feel the let-down begin, then quickly unlatch them and catch the initial fast spray in a towel or cloth. Once the flow slows to a manageable pace, latch them back on. You can also press gently into the side of your breast with your palm during let-down to slow the flow.
Positioning matters here too. If you sit your baby more upright or recline so that the back of their throat is higher than your nipple, milk won’t pool in the back of their mouth. They can swallow at their own pace instead of gulping to keep up, which means fewer breaks in suction.
When Tongue Tie Is the Cause
Tongue tie (ankyloglossia) is present from birth. A short, thick, or tight band of tissue tethers the underside of the tongue to the floor of the mouth, limiting how far the tongue can extend and how well it can cup the breast. Babies with tongue tie sometimes chew on the nipple rather than sucking, because they physically can’t position their tongue correctly. The clicking is persistent, doesn’t improve much with positioning changes, and often comes alongside continued nipple pain and slow weight gain despite frequent feeding.
If you’ve worked on positioning and latch and the clicking hasn’t resolved, it’s worth having your baby evaluated by a lactation consultant (IBCLC) or pediatrician experienced with oral ties. They’ll assess tongue movement during feeding, not just the appearance of the tissue. Some ties are obvious, while others are harder to spot.
When tongue tie is confirmed and causing feeding problems, a frenotomy (releasing the tissue) is a quick procedure. Research following infants before and after frenotomy found significant improvement in breastfeeding concerns, including clicking sounds, nipple pain, and the baby’s ability to drain the breast effectively. Many parents notice immediate changes in latch depth and nipple shape after the procedure, though it can take days to weeks for feeding to fully improve as the baby learns to use their newly mobile tongue.
Signs That Clicking Needs Professional Help
Not every click requires intervention. If your baby is gaining weight well, feeds are comfortable for you, and clicking only happens occasionally, it’s generally not a problem. But a few patterns suggest you’d benefit from working with a lactation consultant:
- Persistent nipple pain that doesn’t improve after the first couple weeks, especially with visible damage or compression marks on your nipple after feeds
- Slow weight gain or a baby who seems hungry again very soon after feeding, suggesting they aren’t transferring milk efficiently
- Clicking throughout every feed that doesn’t resolve with positioning adjustments
- Excessive gassiness or reflux symptoms like frequent spitting up and post-feed irritability, which can result from all the air swallowed during broken suction
A lactation consultant will watch a full feed, assess your baby’s mouth and tongue movements, and determine whether the issue is positional, flow-related, or structural. If they suspect restricted tongue movement is behind the clicking and your baby’s slow progress, they’ll refer you to a provider who can evaluate for a tie release. In many cases, a combination of a better latch technique and addressing any underlying tie resolves the clicking completely within a few weeks.