If you hear a clicking or smacking sound when your baby nurses, you are not imagining it, and you are right to pay attention to it.
Baby clicking while nursing is one of the most common things mamas ask me about, and it is also one of the most consistently under-explained. A lot of families are told it is nothing. In many cases, it is something. And knowing the difference matters for your supply, your comfort, and your baby’s ability to get enough milk.
I am a Speech-Language Pathologist with a master’s degree and a Certified Breastfeeding Counselor in Brownsburg, Indiana. I evaluate oral motor function and feeding for a living. Here is what I want you to know about clicking.
What Clicking During Nursing Actually Means
That clicking or smacking sound happens when your baby loses suction at the breast repeatedly during a feeding.
Think of it this way: when a baby is latched well and feeding effectively, their tongue creates a seal that draws milk in a steady, rhythmic motion. The feeding is quiet except for swallowing. When that suction breaks repeatedly, you hear the click.
Every click is a break in suction. And every break in suction means a moment where milk is not transferring.
This is not just a noise concern. It is a feeding efficiency concern.
The Most Common Causes of Clicking While Nursing
Tongue-Tie
This is the most important cause to understand, because it is also the most commonly missed.
When a tongue-tie is present, the tissue under the tongue restricts how freely the tongue can move. A well-functioning tongue during nursing should elevate, cup, and create a sustained wave motion that draws milk. When the tongue cannot do that freely, baby compensates. One of the most common compensations is using the lips, cheeks, and jaw to create suction instead, which is less stable and breaks more easily. That instability is what produces the clicking sound.
Clicking at every feeding, clicking that never improves, and clicking alongside nipple pain or slow weight gain are all signs that a tongue-tie evaluation is worth pursuing.
You can read more about how tongue-tie affects feeding in Lip Tie vs Tongue-Tie: What’s the Difference?
A Shallow Latch
When baby is not getting a deep mouthful of breast tissue, the seal is harder to maintain. A shallow latch means baby is working to hold on to the nipple rather than drawing in a full, stable mouthful of breast. The suction keeps slipping because there is not enough tissue in the mouth for baby to create a steady grip.
A shallow latch and clicking often go together. If your nipple comes out flattened or creased after a feeding, that is a strong sign the latch is shallower than it should be.
Learn more about what a correct latch should feel like in What a Newborn Latch Should Feel Like
Oversupply or Fast Letdown
When milk comes in very fast, baby sometimes pulls back slightly or adjusts to manage the flow. That adjustment can break suction and create a clicking sound. If the clicking happens mostly right at the start of a feeding, around the time of letdown, and your baby also coughs, chokes, or pulls off when milk first comes in, oversupply may be a factor.
Flat or Inverted Nipples
When there is less for baby to draw in and latch onto, maintaining suction can be more effortful. Clicking in mamas with flat or inverted nipples is sometimes related to the nipple slipping during the feed because baby cannot get a stable hold.
Read more about how nipple shape affects latch in Breastfeeding With Flat or Inverted Nipples
Oral Motor Development
Some babies, particularly those who were born early, experienced a difficult birth, or have tension in the jaw or body, may have oral motor patterns that make sustained suction harder to maintain. This is separate from tongue-tie but can produce similar symptoms.
Why Clicking Matters Beyond the Sound
Every time suction breaks, milk transfer is interrupted. A baby who is clicking through most of a feeding may be getting less milk than the time at the breast suggests.
Over time, this can contribute to:
- Slow weight gain because baby is not transferring efficiently
- A decrease in your supply because the breast is not being fully drained
- Nipple pain or damage from the mechanical friction of repeated suction breaks
- A very long, tiring feeding for baby because they are working harder than they should
If you are wondering whether your baby is getting enough milk, and you are also hearing clicking, those two concerns are likely connected. A weighted feed during a home visit will tell us exactly how much was transferred and give us real data to work from.
Read more about signs of low milk supply and what is actually normal
What You Can Do
Try adjusting the latch first. Break the seal with your finger and try again, aiming for a wider gape before baby latches. Make sure baby’s body is fully facing yours and their chin is pressed into the breast.
Watch for other signs of tongue-tie. Clicking alongside nipple pain, a shallow latch, or slow weight gain is a pattern worth evaluating. A functional assessment looks at how the tongue moves during feeding, not just what the frenulum looks like visually.
Note when in the feeding it happens. Clicking at the start of a feeding is different from clicking throughout. Timing helps narrow down the cause.
Reach out if it is not improving. Clicking that persists past the first week or two, or that comes with pain or weight concerns, is a reason to get a set of eyes on the feeding.
When to Ask for Help
You do not have to wait until something feels urgent. If clicking is happening at most feedings, if it has been going on for more than a week or two without improvement, or if it comes alongside any pain, weight concerns, or a baby who seems unsatisfied after feeds, reach out.
I work with families in Brownsburg, Avon, Plainfield, Zionsville, and the westside of Indianapolis. I come to your home so you do not have to go anywhere with a new baby.
👉 Book a free consult
👉 Learn more about tongue-tie support
Frequently Asked Questions
Why does my baby click while nursing?
Baby clicking while nursing is the sound of suction breaking repeatedly during a feed. The most common causes are a tongue-tie that limits how freely the tongue can move and create suction, a shallow latch that makes it hard to maintain a stable seal, or in some cases a fast letdown or oversupply. Clicking at every feeding, especially when it comes alongside nipple pain or slow weight gain, is worth evaluating.
Is clicking while nursing normal?
Occasional clicking or adjustment sounds can happen, especially in the early days while you and your baby are still learning. But consistent clicking at most feedings is not something to dismiss. It typically means suction is breaking repeatedly, which affects how much milk transfers and can contribute to supply concerns over time.
Can a tongue-tie cause clicking while nursing?
Yes. A tongue-tie restricts how the tongue can move during feeding, which leads baby to compensate with the lips, cheeks, and jaw. That compensatory suction is less stable and breaks more easily, producing the clicking sound. A functional feeding evaluation can determine whether a tongue-tie is contributing.
What should I do if my baby clicks while nursing?
Start by checking the latch. Break the seal and try again, aiming for a wider gape and more breast tissue in baby’s mouth. If clicking continues at most feedings, especially alongside pain or weight concerns, reach out to a lactation consultant or feeding specialist for an evaluation.
