If pumping hurts, you’re not crazy — you’re not “doing it wrong” either as a breastfeeding mother. Pumping should feel like steady tugging or pulling at your breasts. Pumping shouldn’t feel like you’re experiencing pinching, burning, sharp pains, or bruises.
Most pumping-related pain will come from a handful of problems — usually related to flange fit, settings, alignment, or worn-out parts — which are all easily solvable. Below, I’ll walk you through the 9 most common causes of pumping-related pain, what it might look or feel like, and what you can do TODAY to make pumping less painful.
Important Note: While this article is informational, please remember that it is not a substitute for a doctor’s advice. If you experience fever/chills, flu-like symptoms, a red, hot wedge-shaped area on your breast, pus, spreading redness, or severe swelling; cracked or bleeding nipples that are not improving; sudden severe pain that gets worse quickly; please seek the attention of a healthcare provider or lactation expert.
60-Second “Stop The Pain Fast” Check
Prior to diving into the list below, take a moment to run this quick triage.
Contact a provider or lactation professional immediately if you’ve experienced:
- Fever/chills or flu-like symptoms
- Red, hot wedge-shaped area on the breast
- Pus, spreading redness, or severe swelling
- Cracked/bleeding nipples that aren’t improving
- Sudden severe pain that is worsening rapidly
If you are experiencing mild-to-moderate pain that is recurring, then begin with the above steps (in order):
- Fit (flange size and/or shape)
- Suction (it’s probably lower than you think)
- Rhythm/Settings (the timing of your letdown and the speed of your cycle)
- Parts (valve/membrane wear out fast!)
Many people resolve their issue in under 10 minutes by making adjustments to just one of these areas.
What Pumping Should Feel Like
- Strong but comfortable tugging
- Steady pressure (no “chattering”)
- No pinching, stabbing, burning, or rubbing sensations
If your body tenses up when you put the pump on, view that as a signal to make some improvements!
The 9 Most Common Causes of Pumping Pain (And How To Fix Each One!)
1) Wrong Flange Size (Too Small Or Too Large)
What it feels like
Pinching, rubbing, swelling, or the feeling that your nipple is being scraped.
Common Signs
- Nipples rub against the sides of the tunnel
- Red ring marks form around the nipple
- Nipple becomes “lipstick shaped” (angled/flattened) after pumping
- Too much areola is pulled into the tunnel (usually a sign that the flange is too large)
Try This First
- Re-center your nipple in the tunnel before you turn the pump on.
- Immediately decrease suction (don’t assume that the pain means it’s working better).
- Consider sizing changes:
- If the nipple rubs against the tunnel → Increase the flange slightly.
- If too much areola is pulled into the tunnel and it feels “tuggy” deep in tissue → Decrease the flange slightly.
- If you are unsure of your size, try using a silicone insert.
Next Step
If you are unsure of whether or not you have found the right size, use the following simple rule: The nipple should move freely with only a slight amount of areola pulled into the tunnel and no friction.
When to Seek Help
If you’ve tried 1–2 sizes and are still experiencing pain and visible nipple trauma, a lactation consultant can quickly help determine the correct fit.
2) Nipple Is Elastic & /or Flange Shape Doesn’t Match
Sometimes the nipple will extend way down into the tunnel and become swollen during pumping, creating friction and pulling pain, even if the flange appears to be the correct size.
What it feels like
Stretching or pulling pain develops over time during the session. The pain may also develop deep within the breast.
Common Signs
- Nipple extends way down into the tunnel
- Nipple swells during pumping
- Pain develops gradually as pumping continues
- Raw, sore sensation develops after pumping, even on low suction levels
Try This First
- Decrease suction and pump more often, for a short time (such as 2-5 days)
- Consider using a silicone insert or cushion to reduce friction
- Shorten your pumping sessions for now (e.g., 12-15 minutes instead of 20 minutes)
Next Step
Try a different type of flange (some designs and materials are simply more comfortable).
When to Seek Help
If you develop cracks, bleeding, or pain that develops daily, don’t “push through”. Contact a lactation consultant to assess your flange fit.
3) Suction Is Set Too High (This Is Very Common)
More suction does not equal more milk. More often than not, it simply equates to more pain.
What it feels like
Discomfort, pinching, or sand-papery rubbing sensation as soon as you turn the pump on.
Common Signs
- Dreading the pump
- Continually increasing suction in hopes of producing more milk
- Increased suction does not produce increased milk output
Try This First
- Decrease suction to the highest level that feels comfortable to you
- Increase the length of time you stay in letdown/stimulation mode until milk begins to flow
- Use warmth and gentle compressions instead of forcing suction
Next Step
If you’re trying to increase your milk output, consider decreasing your suction and increasing the frequency of your pumps (frequent pumping usually produces more milk than high suction).
When to get help
If you already have nipple trauma, prioritize healing and comfort. Pain can block letdown and reduce output.
4) Your Pump Speed/Settings Are Not Synchronized With Your Body.
In order for your pump settings to work with your body instead of against it, they need to promote letdown-not hinder it.
What It Feels Like:
The initial sensation can be “yanking” or uncomfortable as you transition from letdown to expression mode.
Common Signs:
- It takes too long to reach letdown
- There is on-and-off flow
- Pain occurs only when transitioning from letdown to expression mode
Try This First:
- Stay in letdown mode until there is steady milk flow
- Once milk is flowing, switch to a lower cycle speed that is comfortable
- Use hand-on-pumping techniques (gentle compressions) to assist with flow
Next Step:
Make only one change at a time-otherwise you will have no way of knowing which change assisted.
5) Your Flanges Were Off-Center (Hands-Free Bras Can Cause This)
A slight misalignment of the nipple within the flange can cause considerable pain.
What It Feels Like:
Pain is occurring on one side; uneven soreness or rubbing on one edge of the nipple.
Common Signs:
- One breast is significantly more painful than the other
- Output from each side is noticeably different
- You see the nipple hitting one side of the tunnel
Try This First:
- Before you turn the pump on, visually inspect the flanges and ensure that the nipple is centered
- Adjust the bra tension: If it’s too tight, it can pull the flange off center
- Support the collection bottles so they do not pull the flanges downward
Next Step:
If you’re doing something else while pumping, take a 10 second “re-check” after the first minute of pumping; movement can alter the alignment of the flange.
6) Parts of The Pump Are Worn Out and Causing Suction Instability (And Nipple Trauma)
Parts of the pump tend to deteriorate at a rate that is much faster than people expect.
What It Feels Like:
Chattering pull, inconsistent suction, longer sessions, and soreness afterward.
Common Signs:
- Unexpected drop in output
- You are pumping for longer periods of time to obtain the same milk
- Pain increases even though you have not changed any settings
- The valves appear to be worn out or do not close completely
Try This First:
Replace the valves and membranes (the most common solution).
Next Step:
Check:
- Tubing (for moisture, cracks, looseness)
- Connections (to ensure that they form a tight seal)
- Assembly (even a slight mis-alignment can reduce suction).
7) Friction/Dryness/Rubbing (Especially During Longer Sessions)
What It Feels Like:
Burning, rawness, chafing-sometimes the worst feeling is at the tip of the nipple.
Common Signs:
- There is redness after pumping
- Pain increases as the length of the pumping session increases
- You feel “rubbed raw” rather than bruised
Try This First:
- Double check your suction and fit (it is likely that some form of friction exists due to an improper fit)
- Reduce the length of your pumping sessions for a couple of days
- If applicable, apply a very small amount of pump-safe lubricant to the flanges to decrease friction
Next Step:
If you are exclusively pumping, prioritize comfort and consistancy over extended pumping sessions.
8) Vasospasm-Raynaud’s (Blood Vessel Spasm)
This condition is sometimes overlooked because the pain associated with it typically develops after pumping-the pain does not occur during pumping.
What It Feels Like:
Sharp, burning, throbbing pain after pumping-often brought on by cold.
Common Signs:
- The nipple becomes white after pumping
- It may then become bluish/purple, and then red
- The pain worsens when you enter a cold environment or go into a cold room.
Try This First:
- Apply heat immediately after pumping
- Keep your nipples covered and warm
- Decrease the suction on the pump and improve the flange fit (vasospasm can be caused by trauma to the nipple).
Next Step:
If this problem continues to develop, consult with a healthcare provider-there are many ways to treat this condition.
9) Clogs, Inflammation, Infection (Don’t Ignore These)
A) Clogged Ducts
What It Feels Like:
Pressure & pain at letdown + a tender lump
Common Signs:
- Frequent clogging of the ducts
Try This First:
- Empty your breasts gently and frequently
- Warmth prior to pumping, coolness after pumping
- Gentle compressions to aid in flow
Avoid:
Aggressive, deep massage to the affected area (this can exacerbate inflammation)
B) Mastitis
What It Feels Like:
Breast pain + flu-like symptoms
Common Signs:
- Fever/chills
- Red hot wedge-shaped area on your breast
- Sudden increase in pain and inflammation
Do This:
Contact a healthcare provider as soon as possible
C) Thrush/Yeast (Less Common Than People Think, But Possible)
What It Feels Like:
Shooting/burning pain that persists
Common Signs:
- Shiny/flaky nipples
- Persistent pain that has not been alleviated by adjusting the fit of your flange
Do This:
Obtain a lactation/medical professional assessment for proper diagnosis.
A Simple 3-Day Rescue Plan Before You Give Up On Pumping
If you are overwhelmed, try a quick reset.
Day 1: Comfort First
- Recheck the flange fit and alignment
- Reduce the suction to maximum comfort level
- Replace the old valves/membranes (if they are not already replaced).
Day 2: Reduce Friction/Inflammation
- Reduce the frequency of your pumping sessions by just a little
- Increase the number of times you pump in a day
- Use warmth and gentle compressions (avoid aggressive massage)
Day 3: Fine-Tune Settings
- Continue to stay in letdown mode until the milk begins to flow
- Slowly adjust the cycle speed of your pump
- Assess the pain trend: Is it better, the same or worse?
If your pain has not decreased by Day 3, seek assistance. You don’t have to endure this by yourself.
Breast Pumping Pain FAQs
Should pumping hurt at first?
Some sensitivity can happen early on, but pain is not a requirement. If it hurts, treat it as a fixable signal.
What suction level should I use?
The highest level that feels comfortable. If you’re wincing or tensing, it’s too high.
How do I know my flange size is wrong?
Rubbing, blanching/whitening, swelling, lipstick-shaped nipples, or too much areola pulled in are the common clues.
Why does only one side hurt?
Usually alignment or fit differences between sides—re-center and check flange sizing per side.
When should I replace pump parts?
If you notice suction feels weaker, pumping takes longer, output drops, or pain increases—start with valves/membranes.