How Can I Increase My Milk Supply While Pregnant
Posted on February 23, 2026
Table of Contents
- Introduction
- The Science of Pregnancy and Lactation
- Can You Increase Supply Using "Supply and Demand"?
- Supporting Your Supply Through Nutrition
- Handling Nipple Sensitivity and Aversion
- The Colostrum Transition
- Safety and Medical Considerations
- Preparing for Tandem Nursing
- Conclusion
- FAQ
Introduction
Finding out you are pregnant while still breastfeeding an older child can bring up a whirlwind of emotions. You might feel excitement for the new addition and a deep desire to continue the nursing bond you’ve built with your toddler. However, many moms quickly notice changes in their body that make breastfeeding feel different. One of the most common concerns we hear is a noticeable dip in milk production.
You may find yourself searching for answers on how can i increase my milk supply while pregnant. It is a unique challenge because your body is performing two demanding jobs at once: growing a new life and nourishing another. At Milky Mama, we understand how important this journey is to you. We are here to provide the support and information you need to navigate these changes with confidence.
This post will cover why your supply changes during pregnancy, how to support your body nutritionally, and what steps you can take to maintain your breastfeeding relationship. We want you to feel empowered as you transition into this new chapter of motherhood. Understanding the biological shifts in your body is the first step toward managing your expectations and finding a path that works for your family.
The Science of Pregnancy and Lactation
To understand how to support your supply, it helps to know what is happening behind the scenes. Your body is a finely tuned machine, and during pregnancy, your hormones undergo a massive shift. These shifts are designed to prioritize the growth of the baby in your womb.
The Role of Progesterone
From the moment of conception, your body begins producing high levels of progesterone. This hormone is vital for maintaining a healthy pregnancy. However, progesterone has a specific effect on lactation. It acts as a bit of a "brake" on the hormone prolactin. Prolactin is the hormone responsible for making milk.
When progesterone is high, it tells your breasts to slow down milk production and start shifting back toward making colostrum. Colostrum is the thick, nutrient-dense "liquid gold" that your newborn will need in their first days of life. This shift usually begins around the fourth or fifth month of pregnancy, but for some moms, it starts much earlier.
If you want a deeper explanation of what’s happening while you nurse through pregnancy, our guide on breastfeeding while pregnant is a helpful next step.
Prolactin and the Let-Down Reflex
You might notice that your let-down reflex feels slower or less intense than before. The let-down reflex is the release of milk from the breast tissue into the milk ducts. Because your prolactin levels are being suppressed by pregnancy hormones, the "signal" to release milk may not be as strong.
This does not mean your milk is gone entirely. It just means the biological drive to produce large quantities of mature milk is temporarily sidelined by the need to support the new pregnancy. Understanding this can help take the pressure off yourself if you notice the pump isn't filling up like it used to.
The Composition Change
It isn’t just the quantity of milk that changes; it is also the quality. As you move further into your pregnancy, your milk begins to change back into colostrum. This milk is higher in sodium and protein and lower in lactose (milk sugar). This means the milk may taste saltier and less sweet to your toddler. Some children don’t mind the change at all, while others may naturally start to nurse less frequently because of the new flavor.
Key Takeaway: Milk supply drops during pregnancy are primarily hormonal. Because these changes are driven by the placenta, traditional methods of increasing supply may work differently than they did before you were pregnant.
Can You Increase Supply Using "Supply and Demand"?
Under normal circumstances, breastfeeding works on a simple principle: supply and demand. When your baby or a pump removes milk, your body receives a signal to make more. If you remove more milk, your body usually responds by increasing production.
Why Pregnancy is Different
When you are pregnant, the "demand" signal has to compete with the "pregnancy" signal. The hormones coming from the placenta are very powerful. For many moms, no matter how much they nurse or pump, the supply continues to decrease. This can be frustrating if you are used to being able to "power pump" your way back to a high supply.
Maintaining What You Have
While you may not be able to "boost" your supply back to pre-pregnancy levels, you can certainly work to maintain what you have. Frequent milk removal is still beneficial. It keeps the milk ducts active and helps your body stay in the habit of lactation. If your toddler is still nursing frequently, they are doing the work for you. If they are nursing less, you might choose to use a manual pump for a few minutes a day just to keep things moving.
For more context on why the numbers on a pump can look different from a baby’s feeding, see pumping versus nursing output.
What to Do Next:
- Observe your toddler’s nursing patterns to see if they are frustrated by the lower flow.
- Check for signs of "dry nursing," which is when a child continues to nurse even if very little milk is being produced.
- Adjust your expectations and remember that your body is currently prioritizing the health of your unborn baby.
Supporting Your Supply Through Nutrition
Even though hormones are the main driver of supply during pregnancy, your nutritional status plays a massive role in how you feel and how your body functions. Growing a baby and breastfeeding at the same time is an Olympic-level feat of endurance. You need to fuel yourself accordingly.
Caloric Intake Requirements
Most breastfeeding moms need an extra 500 calories a day. Pregnant moms usually need an extra 300 to 450 calories depending on the trimester. When you are doing both, your caloric needs can increase by 800 or more calories a day. If you aren't eating enough, your body will prioritize the pregnancy first, then your own health, and finally your milk supply.
Focus on nutrient-dense foods that provide sustained energy. Think of "real" foods like avocados, nuts, seeds, lean proteins, and complex carbohydrates. These provide the building blocks your body needs to support two children at once.
Hydration is Critical
Your body uses a significant amount of water to produce amniotic fluid, increase your blood volume, and create breast milk. Dehydration is a very common reason for a sudden dip in supply. If you are feeling thirsty, you are likely already slightly dehydrated.
We recommend keeping a water bottle with you at all times. Aim for pale yellow urine as a sign that you are well-hydrated. If plain water feels boring, or if you are struggling with pregnancy-related nausea, adding electrolytes can help. Our Pumpin' Punch™ lactation drink mix is a great option here. It provides a hydration boost along with lactation-supporting ingredients that are safe for many moms to enjoy.
Specific Galactagogues to Include
A galactagogue is a substance that may help support or increase milk production. While many herbal supplements should be avoided during pregnancy (more on that later), food-based galactagogues are generally safe and very effective.
- Oats: Oats are rich in iron and fiber. Low iron levels can lead to a low milk supply, so starting your day with a bowl of oatmeal is a classic breastfeeding strategy.
- Flaxseed: These contain healthy fats and phytoestrogens that can support hormonal balance.
- Brewer's Yeast: This is a nutritional powerhouse filled with B vitamins and iron.
Our Emergency Lactation Brownies are one of our most popular treats for a reason. They are packed with these high-quality, food-based ingredients. They provide a convenient way to get those extra calories and lactation support in a delicious snack.
Key Takeaway: You cannot pour from an empty cup. To support your milk supply, you must aggressively prioritize your own nutrition and hydration.
Handling Nipple Sensitivity and Aversion
One of the biggest hurdles to increasing your milk supply while pregnant isn't just the biology—it's the physical discomfort. Many moms find that their nipples become extremely sensitive or even painful during pregnancy.
Why It Hurts
The increase in estrogen and progesterone makes your breast tissue more sensitive. Even a toddler who has a perfect latch might suddenly feel like they are "nursing with sandpaper." This discomfort can make you want to nurse less often, which then signals your body to produce even less milk.
To manage this, ensure your toddler is still latching deeply. Sometimes as children get older, their latch gets "lazy." Gently reminding them to open wide can save your nipples a lot of grief. You can also use a pregnancy-safe nipple balm to keep the skin hydrated and protected.
Nursing Aversion
Some pregnant moms experience something called "nursing aversion." This is a sudden, intense feeling of irritability or a "skin-crawling" sensation when the child latches. It is a very real, biological response to the hormonal shifts of pregnancy.
If you feel this, you aren't a bad mom. It is your body’s way of saying it is overwhelmed. If aversion makes it hard to nurse frequently enough to keep your supply up, try using distraction. Listen to a podcast, play a game on your phone, or practice deep breathing while your toddler nurses. Shortening nursing sessions can also help you maintain the relationship without feeling overwhelmed.
If you need individualized help with soreness, latch, or pumping comfort, our Certified Lactation Consultant Breastfeeding Help page is a good place to start.
The Colostrum Transition
Around the midpoint of your pregnancy, your body will likely stop producing mature milk and begin producing colostrum. This is a vital part of preparing for your new baby.
Is it Safe for My Toddler?
Many moms worry that if their toddler drinks the colostrum, there won't be any left for the newborn. This is a myth! Colostrum is produced continuously throughout the later stages of pregnancy. As long as your toddler continues to nurse, your body will keep making it. In fact, some research suggests that having a toddler nurse during this time can actually help "prime" the breasts for a robust milk supply once the new baby arrives.
The Laxative Effect
Colostrum is designed to help a newborn pass their first stool (meconium). Because of this, it has a mild laxative effect. If your toddler is still nursing a lot when your colostrum comes in, you might notice they have looser stools than usual. This is normal and generally not a cause for concern, but it is something to be aware of, especially if you are in the middle of potty training!
What to Do Next:
- Continue nursing if you and your child are both comfortable.
- Monitor your toddler’s diapers to ensure they are staying hydrated if their stools become very loose.
- Discuss tandem nursing (nursing two children of different ages) with a lactation consultant to prepare for the future.
Safety and Medical Considerations
For the vast majority of women, breastfeeding while pregnant is perfectly safe. The old belief that breastfeeding causes miscarriage or preterm labor has been largely debunked for healthy, low-risk pregnancies.
Uterine Contractions
It is true that nipple stimulation releases oxytocin. Oxytocin is the hormone that causes the let-down reflex, and it is also the hormone that causes uterine contractions. However, in a healthy pregnancy, the uterus is not very sensitive to oxytocin until the very end. The amount of oxytocin released during a typical nursing session is usually not enough to trigger labor.
Think of it this way: oxytocin is also released during physical intimacy, which is generally considered safe during pregnancy. If your doctor has told you that you are safe to remain active and intimate, you are likely safe to continue breastfeeding.
When to Be Cautious
There are some situations where you should speak closely with your healthcare provider about your breastfeeding journey:
- If you are carrying multiples (twins, triplets, etc.).
- If you have a history of preterm labor or late-term miscarriage.
- If you are experiencing unexplained vaginal bleeding or uterine pain.
- If you have been placed on "pelvic rest" by your doctor.
In these cases, your provider might suggest weaning or reducing nursing sessions to minimize any risk. Always listen to your body and your medical team. You're doing an amazing job, and keeping everyone safe is the top priority.
Preparing for Tandem Nursing
If your goal is to continue breastfeeding your older child after the baby is born, you are looking at "tandem nursing." This can be a beautiful way to help your older child transition to having a sibling.
The Post-Birth Supply Surge
The good news is that once you deliver the placenta, your progesterone levels will drop, and your prolactin will skyrocket. This is when your "real" milk comes in. Moms who tandem nurse often find they have a very abundant milk supply because they have two "customers" stimulating production.
During the final months of pregnancy, don't stress too much about the low volume. Think of it as a "maintenance phase." Once the new baby arrives, your supply will naturally increase to meet the needs of both children. At that stage, you can use herbal lactation supplements to support your goals. Products like our Pumping Queen™ herbal supplement or Lady Leche™ lactation supplement are designed to support a healthy milk supply after the baby is born.
Balancing the Needs of Two
When the baby arrives, the newborn’s needs come first. They need the colostrum and the first milk to grow. Most tandem nursing moms find that letting the baby nurse first and then letting the toddler finish up works well. This ensures the baby gets the richest milk while the toddler helps "clear the breasts," which can actually prevent issues like engorgement or clogged ducts.
If you’re looking for more guidance on tandem feeding and shared nursing routines, the article on tandem breastfeeding covers that transition in more detail.
Key Takeaway: Breastfeeding is not just about the milk. It’s about the connection. Even if your supply is low right now, the comfort and security you are providing your older child are invaluable.
This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice.
Conclusion
Trying to increase your milk supply while pregnant is a journey that requires patience and self-compassion. While pregnancy hormones make it difficult to see the same "boost" you might see when you aren't pregnant, your efforts are not in vain. By focusing on high-quality nutrition, staying hydrated, and maintaining your nursing sessions as much as your comfort allows, you are setting a strong foundation for the future.
- Prioritize calories and hydration to give your body the energy it needs.
- Use food-based supports like oats and flaxseed to nourish your system.
- Be gentle with yourself regarding nipple sensitivity and nursing aversion.
- Trust that your supply will return in abundance once your new baby arrives.
To keep building a plan that fits your feeding goals, browse our full lactation snacks collection, lactation drink mixes, and lactation supplements.
"Every drop counts, and your well-being matters just as much as the milk you produce."
You are doing the work of two people right now, and that is incredible. If you find yourself needing a little extra support, we are here for you. Whether it’s through a virtual lactation consultation or a box of our nourishing treats, Milky Mama is dedicated to helping you reach your breastfeeding goals, no matter what stage of the journey you are in.
FAQ
Can I use lactation supplements to increase my supply while pregnant?
Most herbal lactation supplements are not recommended during pregnancy because some herbs can affect uterine tone. We generally advise focusing on food-based support, like oats and flaxseed, during pregnancy. Always consult with your healthcare provider before starting any new herbal supplement while expecting.
Why did my milk supply drop as soon as I got pregnant?
Your body produces high levels of progesterone during pregnancy to support the growing fetus. This hormone naturally suppresses prolactin, which is the hormone responsible for milk production. This hormonal shift is the primary reason most moms see a decrease in supply, regardless of how often they nurse.
Will my toddler be getting enough nutrition if my supply is low?
If your child is over 12 months old, they likely get most of their nutrition from solid foods and other liquids. If they are under 12 months, you should work closely with your pediatrician to monitor their weight and ensure they are getting enough calories from formula or stored breast milk if your supply drops significantly.
Does breastfeeding during pregnancy cause contractions?
Breastfeeding releases a small amount of oxytocin, which can cause mild uterine "niggles" or Braxton Hicks. For a healthy, low-risk pregnancy, this is typically not enough to trigger preterm labor. However, if you have a high-risk pregnancy or a history of preterm labor, you should discuss this with your doctor.
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