Can Retained Placenta Cause Low Milk Supply?
Posted on April 01, 2026
Table of Contents
- Introduction
- The Hormonal Transition: Why the Placenta Matters
- What Exactly is a Retained Placenta?
- How Retained Placenta Causes Low Milk Supply
- Recognizing the Symptoms of Retained Placenta
- The Connection to Postpartum Hemorrhage and Sheehan’s Syndrome
- Diagnosing the Issue: Labs and Imaging
- Practical Steps: What to Do If You Suspect RPF
- Life After Removal: Will My Milk Come Back?
- Real-Life Scenario: Navigating the RPF Journey
- Supporting Your Recovery and Hydration
- The Emotional Toll of Low Milk Supply
- Frequently Asked Questions
- Conclusion
Introduction
Imagine you have prepared everything for your baby’s arrival. You’ve taken the classes, set up the nursery, and your heart is full of anticipation for that first latch. But then, day three, four, and five pass, and that expected "fullness" in your breasts never arrives. Your baby seems constantly hungry, and you feel like you’re failing at something that was supposed to be natural. This experience can be incredibly isolating and frightening, but for many parents, there is a very real, biological reason behind this struggle that has nothing to do with their effort or worth.
The question "can retained placenta cause low milk supply?" is one that often comes up when the typical transition from colostrum to mature milk—what many call the "milk coming in"—simply doesn't happen on schedule. In this article, we are going to dive deep into the intricate hormonal dance between your placenta and your breasts. We will explore how even a tiny fragment of placental tissue can act as a hormonal "brake" on your milk production, the symptoms you should watch for, and the steps you can take to get your breastfeeding journey back on track. At Milky Mama, we believe that every drop counts and that you deserve compassionate, evidence-based support as you navigate these challenges. By the end of this post, you will understand the physiological link between the placenta and lactation and how to advocate for the care you need.
The Hormonal Transition: Why the Placenta Matters
To understand how a retained placenta affects your milk, we first have to look at the incredible science of how your body prepares for baby. During pregnancy, your body undergoes a massive hormonal shift. One of the primary players is progesterone, a hormone produced in high quantities by the placenta.
Progesterone is essential for maintaining a healthy pregnancy, but it has a very specific secondary job: it keeps your milk production in check. While you are pregnant, your breasts are already capable of making milk (this is why many people notice colostrum leaking in the second or third trimester), but high levels of progesterone prevent the "mature" milk from being produced in large volumes.
The Trigger for Milk Production
The moment your baby is born, your body begins a series of rapid changes. However, the true "start" signal for milk production isn't the birth of the baby—it’s the delivery of the placenta.
When the placenta detaches from the uterine wall and is birthed, your progesterone levels plummet. This sudden drop is the biological green light for the hormone prolactin to take center stage. Prolactin is the "milk-making" hormone. Once the "progesterone brake" is released, prolactin can finally tell your mammary glands to start producing mature milk in larger quantities. This process is known as Lactogenesis II.
If the transition goes smoothly, most parents notice their milk "coming in" between two to five days after birth. But if even a small piece of that placenta stays behind, the "brake" remains partially pressed.
What Exactly is a Retained Placenta?
In a typical birth, the placenta is delivered within about 30 minutes of the baby. Most of the time, it comes out in one whole, intact piece. However, there are instances where things don't go exactly as planned.
Retained Placental Fragments (RPF)
When we talk about milk supply issues, we are usually referring to Retained Placental Fragments (RPF). This means that while the main body of the placenta was delivered, small pieces or "lobes" remained attached to the uterine lining. Because this tissue is still technically "plugged in" to your blood supply, it continues to produce progesterone and estrogen.
Why Does It Happen?
There are a few reasons why fragments might be left behind:
- Placenta Adherens: The placenta is stuck to the uterine wall but not deeply grown into it.
- Trapped Placenta: The placenta detaches from the wall but gets trapped behind a closing cervix.
- Placenta Accreta: This is a more serious condition where the placenta grows too deeply into the uterine wall, making it very difficult to remove completely.
Even if your provider announced "placenta intact" at the time of birth, tiny microscopic fragments or an accessory lobe (an extra piece of placenta) can sometimes be missed. This is why it is so important to listen to your body and monitor your milk production and physical recovery.
How Retained Placenta Causes Low Milk Supply
The link between retained placenta and low milk supply is purely hormonal. Because those fragments are still producing progesterone, your brain doesn't receive the clear "pregnancy is over" signal it needs to dump prolactin into your system at high levels.
Delayed Lactogenesis II
For many parents with RPF, the milk never seems to "come in." You might continue to produce small amounts of colostrum, but you don't experience the breast fullness, warmth, or the increase in volume that usually happens by day five. This can be devastating if you aren't sure why it's happening.
Absent Milk Supply
In some cases, the milk supply may be almost entirely absent. If the fragment is large enough or producing enough hormones, the transition to mature milk may be blocked entirely until the tissue is removed.
A Milky Mama Note: If you are experiencing a delay in your milk coming in, please know that you are doing an amazing job. This is a medical hurdle, not a reflection of your ability to parent. We often recommend reaching out for virtual lactation consultations to help troubleshoot these early days.
Recognizing the Symptoms of Retained Placenta
Low milk supply is often a secondary symptom of retained placenta. While it might be the thing that leads you to realize something is wrong, there are often physical signs that your body is struggling to heal from the RPF.
1. Abnormal Bleeding
It is normal to have postpartum bleeding (lochia), but it should generally taper off and change color from bright red to pinkish-brown over the first week. If you experience heavy bleeding that soaks through a pad in an hour, pass large clots (bigger than a golf ball), or if your bleeding suddenly becomes heavy again after it had started to slow down, this is a major red flag.
2. Foul-Smelling Discharge
An infection can often develop when tissue is retained in the uterus. If your postpartum discharge has a strong, unpleasant, or "rotting" odor, you should contact your healthcare provider immediately.
3. Fever and Chills
Flu-like symptoms, including a fever over 100.4°F or persistent chills, can indicate that your body is fighting an infection related to the retained tissue.
4. Persistent Uterine Pain
While "after-pains" are normal as the uterus shrinks, severe or worsening abdominal pain and cramping can be a sign of RPF.
5. The "Lack of Change" in Breasts
If your baby is five days old and your breasts still feel soft, "empty," or exactly as they did during pregnancy, and you haven't seen an increase in milk volume, this is a clinical sign that your hormones may not have shifted correctly.
The Connection to Postpartum Hemorrhage and Sheehan’s Syndrome
Retained placenta is a leading cause of postpartum hemorrhage (excessive bleeding). When a mother loses a significant amount of blood during or after birth, it can further complicate milk supply.
Anemia and Supply
Significant blood loss can lead to anemia (low iron). Iron is crucial for the metabolic processes that create breast milk. Many parents find that after a hemorrhage, their supply is low because their body is prioritizing its own survival and recovery over milk production.
Sheehan’s Syndrome
In very rare and severe cases of hemorrhage, the blood pressure drops so low that the pituitary gland (which sits at the base of the brain) is deprived of oxygen. The pituitary gland is the control center for prolactin. If it is damaged—a condition called Sheehan's Syndrome—the body may lose the ability to produce the hormones necessary for lactation.
If you experienced a significant blood loss (over 1,000 ml) or lost consciousness during birth, it is vital to have your hormone levels checked by a specialist who understands lactation.
Diagnosing the Issue: Labs and Imaging
If you suspect that a retained placenta is the cause of your low milk supply, you don't have to guess. There are clear clinical steps to get a diagnosis.
Ultrasound and MRI
A pelvic ultrasound is usually the first step. A technician can look for "echogenic mass" or tissue remaining inside the uterus. In some cases, an MRI may be used for a clearer picture.
Essential Lab Work
To see if hormones are blocking your milk, your provider can order specific blood tests. Useful labs include:
- Progesterone: If this is still high several days postpartum, it’s a strong indicator of retained tissue.
- Prolactin: To see if your body is attempting to make milk.
- CBC (Complete Blood Count): To check for infection and anemia.
- Thyroid Panel (TSH/Free T4): To rule out thyroid issues, which are also common causes of low supply.
If your provider is hesitant to run these tests, don't be afraid to advocate for yourself. You know your body better than anyone else. You can also seek support through our online breastfeeding classes to learn more about the science of supply and how to talk to your medical team.
Practical Steps: What to Do If You Suspect RPF
If you’re sitting there at 3 AM, looking at a hungry baby and wondering if this is what’s happening to you, here is a checklist of steps to take.
1. Contact Your Provider Immediately
If you have a fever, heavy bleeding, or foul discharge, go to the emergency room or call your OB/GYN or midwife right away. Retained placenta is a medical issue that needs to be addressed to prevent infection or further hemorrhage.
2. Protect Your Supply (The "Bridge" Phase)
While you wait for a diagnosis and treatment, you need to tell your body to keep trying.
- Pump or Hand Express: Even if nothing is coming out, the stimulation sends signals to the brain. Try to pump every 2-3 hours.
- Skin-to-Skin: Spend as much time as possible skin-to-skin with your baby. This boosts oxytocin, which helps with the "let-down" reflex and bonding.
- Triple Feeding: This involves nursing, then supplementing the baby, then pumping. It is exhausting, so make sure you have a support system in place.
3. Seek Expert Lactation Support
An IBCLC (International Board Certified Lactation Consultant) is trained to recognize the signs of hormonal low supply. They can work with your doctor to coordinate care. We offer virtual lactation consultations to help you create a customized plan during this stressful time.
Life After Removal: Will My Milk Come Back?
The good news is that for the vast majority of parents, milk supply increases significantly once the retained fragments are removed. This is often done through a procedure called a D&C (Dilation and Curettage), where the doctor gently clears the uterine lining.
Once the progesterone-producing tissue is gone, the "brake" is finally released. Many parents report seeing a "surge" in milk production within 24 to 48 hours after the procedure.
However, because the first few days of "demand" were missed, you may need to work a little harder to build a full supply. This is where lactation treats and supplements can become a helpful part of your toolkit.
Using Supplements Strategically
Once the medical cause is resolved, you can focus on nourishing your body.
- Lady Leche™: This herbal supplement is designed to support milk flow and enrich the milk you are already making.
- Pump Hero™: A great option for those who are focusing on pumping to build their volume back up.
- Pumping Queen™: This can help support the hormonal balance needed for healthy lactation.
Disclaimer: These products are not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice.
Real-Life Scenario: Navigating the RPF Journey
Let’s look at a common scenario. Imagine a mom named Nia. Nia had a long labor that ended in a C-section. By day four, she noticed she wasn't feeling the "heavy" feeling in her breasts that her friends had described. Her baby was fussy and losing more weight than the pediatrician liked. Nia also noticed she was still having bright red bleeding and felt very weak.
Nia's intuition told her something was wrong. She reached out to her midwife, who ordered an ultrasound that confirmed a small fragment of the placenta was still in her uterus. Nia had a D&C on day six.
While Nia waited for her procedure, she used a hospital-grade pump and snacked on Emergency Brownies to keep her energy up. Within two days of the procedure, Nia saw her milk volume double. By working with a lactation consultant and using Milky Melon™ for hydration and support, she was able to eventually reach her breastfeeding goals.
Nia's story is a reminder that breastfeeding is natural, but it doesn't always come naturally—especially when there are medical hurdles in the way.
Supporting Your Recovery and Hydration
When you are recovering from a retained placenta, your body has been through a lot. You may have lost blood, fought an infection, and endured a surgical procedure, all while trying to care for a newborn. Your recovery must be your top priority.
Hydration is Key
You cannot make milk if you are dehydrated, especially if you are recovering from blood loss. While water is great, many parents find they need something with added electrolytes and lactation-supportive ingredients. Our Lactation LeMOOnade™ or Pumpin Punch™ are delicious ways to stay hydrated while giving your body an extra boost.
Nutrition and Calories
Your body needs extra calories to heal and produce milk. Don't skip meals. If you're too busy to cook, reaching for Oatmeal Chocolate Chip Cookies or a Fruit Sampler can provide a quick, nourishing snack that supports your goals.
The Emotional Toll of Low Milk Supply
We want to take a moment to validate the feelings that come with this struggle. When you want to breastfeed and your body seems to be working against you, it is normal to feel grief, anger, and deep frustration.
Society often puts immense pressure on parents to have a "perfect" breastfeeding experience. We want you to know that your well-being matters just as much as the milk you produce. If you are struggling, please reach out for support. Our Official Milky Mama Lactation Support Group on Facebook is a safe, inclusive space where you can connect with other parents who have walked this path.
Remember: Every drop counts. Whether you are providing a few teaspoons of colostrum or a full supply, you are giving your baby incredible benefits.
Frequently Asked Questions
1. How long does it take for milk to come in after a retained placenta is removed?
Many parents see a noticeable increase in milk volume within 24 to 48 hours after the placental fragments are removed. However, if the fragments were in place for a week or more, it may take a few days of frequent pumping or nursing to "catch up" and reach full production.
2. Can I have a retained placenta even if my bleeding has stopped?
While heavy bleeding is the most common sign, it is possible (though less common) to have small fragments even if bleeding has slowed down. If your milk supply is absent or very low and you have other symptoms like fever or uterine pain, you should still be evaluated.
3. Will taking lactation supplements help if I still have retained placenta?
Supplements like Milk Goddess™ or Dairy Duchess™ are excellent for supporting supply, but they cannot override the hormonal "brake" caused by retained placenta. You must address the medical cause first. Once the tissue is removed, supplements can be very effective in helping you build your supply back up.
4. Is it too late to breastfeed if the retained placenta isn't found for a few weeks?
It is not necessarily too late! The breasts remain "primed" for a while. Once the hormonal blockage is removed, you can work with a lactation consultant to implement a plan for relactation or building supply. Many parents have successfully built a full supply even after a delayed start.
Conclusion
Understanding the link between your placenta and your milk supply is empowering. If you have been struggling with a low milk supply and suspect that a retained placenta might be the cause, please know that there is hope. By identifying the symptoms, advocating for the right medical tests, and seeking expert support, you can address the root cause and move forward in your breastfeeding journey.
Your body is incredible. Breasts were literally created to feed human babies, and sometimes they just need a little help getting the right signals to start their work. Whether you are dealing with a temporary delay or a more complex medical recovery, Milky Mama is here to support you every step of the way with nourishing products and certified lactation expertise.
You are doing an amazing job, and you don't have to do this alone. If you're ready for more support, we invite you to explore our Breastfeeding 101 class or join our community on Instagram for daily tips and encouragement. You’ve got this, and we’ve got you!
This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice. The information provided is for educational purposes and is not a substitute for professional medical diagnosis or treatment.
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