Why Am I Not Pumping Enough Milk? Causes and Solutions

1. First: What Is “Normal” Pumping Output?

Before assuming there’s a problem, it’s important to understand what typical pumping output looks like.

• 1–3 oz (30–90 ml) per breast per session is common
• Morning sessions often produce more milk
• Pump output is usually less than direct breastfeeding transfer

Pumping output alone does not always reflect total milk supply.

2. Cause #1: Pumping Too Infrequently

The most common cause of low output is simply not pumping often enough.

Why it matters: Milk production works on supply and demand. Infrequent milk removal tells your body that less milk is needed.

Solutions

• Pump every 2–3 hours when building or increasing supply
• Aim for 8–10 sessions per day if exclusively pumping
• Avoid long gaps, especially early postpartum

3. Cause #2: Incomplete Milk Removal

If milk isn’t fully removed during sessions, supply may gradually decrease.

Common Reasons

• Session ends too early
• Weak or inconsistent suction
• Poor flange fit

Solutions

• Pump 3–5 minutes after milk slows
• Use hands-on pumping techniques
• Choose a pump designed for effective emptying

Many moms rely on the MomMed S21 as a primary pump because its consistent suction and adjustable modes support full milk removal—especially when pumping multiple times per day.

4. Cause #3: Incorrect Flange Size

Using the wrong flange size is one of the most overlooked issues.

Signs of Poor Fit

• Nipple rubbing the tunnel sides
• Pain or redness after pumping
• Low output despite frequent pumping

Solutions

• Measure nipple diameter (not areola)
• Reassess size if output changes
• Adjust fit as your body changes postpartum

5. Cause #4: Stress and Lack of Let-Down

Stress hormones can interfere with milk let-down—even when supply is present.

Common Triggers

• Rushing through sessions
• Noisy or uncomfortable environments
• Nighttime fatigue

Solutions

• Use stimulation or massage mode first
• Create a calm pumping environment
• Try gentler pumps during sensitive sessions

Some moms alternate their main pump with a comfort-focused option like the MomMed S33 during nighttime or emotionally sensitive sessions, helping support relaxation and let-down.

6. Cause #5: Hormonal or Physical Factors

Certain physical conditions can affect pumping output.

In many cases, output improves once the underlying factor resolves.

7. Cause #6: Pump Not Suited to Your Needs

Not all pumps are designed for frequent or long-term use.

Signs Your Pump May Be the Issue

• Output decreases over time
• Suction feels inconsistent
• Pumping feels tiring or ineffective

Choosing the Right Pump

• MomMed S21: Ideal as a main, go-to pump for frequent pumping, work routines, and exclusive pumping
• MomMed S33: Best for gentle, quiet, nighttime or stress-sensitive sessions

Many moms find that pairing efficiency with comfort leads to better long-term results.

8. Quick Troubleshooting Checklist

9. When to Seek Lactation Support

Consider professional help if:

• Output remains very low despite adjustments
• Pumping is consistently painful
• You experience frequent clogs or mastitis
• You feel emotionally overwhelmed

Lactation consultants can assess technique, schedule, and equipment.

Conclusion

Low pumping output is common—and often fixable. In most cases, the solution lies in small, targeted adjustments rather than drastic changes.

Key takeaways:

• Pump frequently and consistently
• Ensure complete milk removal
• Check flange fit regularly
• Use the right pump for your routine
• Balance efficiency (S21) with comfort (S33)

Your body is not failing—sometimes it just needs clearer signals and better support.