Will My Milk Supply Drop If I Get Pregnant?
Posted on April 14, 2026
Table of Contents
- Introduction
- The Role of Hormones in Pregnancy and Lactation
- When Does the Supply Drop Usually Happen?
- Signs Your Milk Supply Is Decreasing
- The Transition to Colostrum
- Managing Nipple Sensitivity and Discomfort
- Supporting Your Body and Supply
- Can Supplements Help During Pregnancy?
- Is It Safe to Continue Breastfeeding?
- Deciding to Wean or Continue
- Tips for Maintaining Comfort and Well-being
- Nutritional Foundations for the Nursing and Pregnant Parent
- Dealing with the Emotional Aspect
- Looking Toward the Future: After the Birth
- Conclusion
- FAQ
Introduction
Finding out you are pregnant while still breastfeeding often brings up a whirlwind of emotions. You might feel excited about the new addition to your family, but you may also feel concerned about your current nursing relationship. One of the most common questions we hear at Milky Mama is whether pregnancy will cause a decrease in milk production. It is a valid concern, especially if your older child is still heavily dependent on human milk for their primary nutrition.
The short answer is that for the vast majority of people, milk supply does decrease during pregnancy. This shift is driven by the complex hormonal changes required to support a growing fetus. While it can feel discouraging, understanding why this happens and what to expect can help you navigate the coming months with confidence. In this post, we will explore the science behind pregnancy-related supply drops, how to manage the transition, and how to support your body through this unique journey.
Our goal is to provide you with the tools and knowledge needed to make the best decisions for your family. Whether you plan to continue nursing through your pregnancy, known as tandem nursing, or use this time to begin a gentle weaning process, we are here to support you. If you want extra guidance, our Certified Lactation Consultant Breastfeeding Help page can connect you with personalized lactation support. Knowing what to expect is the first step in feeling empowered during this transition.
The Role of Hormones in Pregnancy and Lactation
To understand why milk supply changes during pregnancy, we have to look at the endocrine system. Breastfeeding is a delicate balance of hormones, primarily prolactin and oxytocin. Prolactin is the hormone responsible for making milk, while oxytocin triggers the let-down reflex, which is the process of the milk moving through the ducts to the nipple.
When you become pregnant, your body begins to produce high levels of estrogen and progesterone. These hormones are essential for maintaining a healthy pregnancy and helping the fetus grow. However, progesterone has a specific secondary effect: it acts as an inhibitor to prolactin. In the early stages of pregnancy, these rising levels of progesterone can begin to interfere with the signals your body uses to produce milk.
This is a biological safeguard. Your body is shifting its resources to prioritize the growth of the new baby in your womb. Because this change is hormonal rather than based on "supply and demand," common methods for increasing milk supply—like pumping more often or power pumping—may not be as effective as they usually are. While your body is still capable of producing milk, the physiological "volume knob" is often turned down by the pregnancy itself.
When Does the Supply Drop Usually Happen?
Every person and every pregnancy is different, but there are general patterns that many breastfeeding parents notice. For some, a drop in supply is one of the first signs of pregnancy, occurring even before a missed period. For others, the change is more gradual and becomes noticeable later on.
Most nursing parents report a significant decrease in milk volume during the first trimester. By the time you reach the second trimester, usually between weeks 16 and 20, the milk supply often drops further. If you'd like a deeper breakdown of this stage, read How to Support Your Milk Supply While Pregnant.
Colostrum is the thick, concentrated "first milk" that is rich in antibodies and nutrients designed for a newborn. It is produced in much smaller quantities than mature milk. If you are nursing an older toddler, they may notice this change in volume. Some children will continue to nurse for comfort regardless of the amount, while others may become frustrated or lose interest as the flow slows down.
Key Takeaway: Milk supply changes during pregnancy are primarily driven by hormones, not by how often you nurse. Most people notice a significant decrease by the midpoint of their pregnancy.
Signs Your Milk Supply Is Decreasing
If you are concerned about your supply, there are several signs you can look for in your nursing child. Since you cannot "see" how much milk is being produced during a nursing session, you have to rely on behavioral cues and physical changes.
- Increased Nursing Frequency: Your child may want to nurse more often as they try to signal your body to make more milk. They may seem more frustrated at the breast or pull away frequently.
- Longer Nursing Sessions: If the flow is slower, your child may stay at the breast longer to get the same amount of milk they are used to receiving.
- Changes in Wet Diapers: If your child is under one year old and still relies on milk as their primary source of hydration, you may notice fewer heavy wet diapers.
- Hearing Fewer Swallows: During a nursing session, you might notice that you hear your child swallowing less frequently than before.
- Nipple Soreness: While not a direct sign of low supply, many pregnant people experience increased nipple sensitivity. This can make the decreased supply feel more prominent because nursing becomes physically more challenging.
If your child is over the age of one, a drop in milk supply is generally not a medical concern, as they are likely eating a variety of solid foods. However, if your baby is under six months old and you are pregnant, it is crucial to work closely with a pediatrician and a lactation consultant to ensure they are getting enough calories and staying hydrated. A resource like Breastfeeding 101 can also help you build confidence around latch, supply, and feeding expectations.
The Transition to Colostrum
As your pregnancy progresses into the second and third trimesters, your body prepares for the arrival of the new baby. This involves shifting from mature milk production back to the production of colostrum. Colostrum is often called "liquid gold" because it is packed with immunological properties that protect a newborn.
For a nursing toddler, the shift to colostrum means two things: a change in volume and a change in taste. Colostrum is much higher in sodium and lower in lactose than mature milk. This gives it a saltier, less sweet flavor. Many toddlers will notice this change and may decide to wean on their own because they no longer enjoy the taste.
If you plan to tandem nurse—which is nursing both the newborn and the older child after the birth—don't worry about the toddler "using up" the colostrum. Your body will continue to produce colostrum as long as it is needed, and the act of nursing your older child can actually help your milk come in more quickly after the birth. For a deeper look at what to expect before delivery, How to Help Milk Supply Before Birth is a helpful next read.
Managing Nipple Sensitivity and Discomfort
One of the biggest hurdles to breastfeeding during pregnancy isn't just the milk supply, but the physical discomfort. Pregnancy hormones often cause extreme nipple tenderness. This can make the latch of even an experienced nursing child feel painful or irritating.
Some parents also experience what is known as "nursing aversion" or "nursing agitation" during pregnancy. This is a sudden, intense feeling of irritability or the urge to "get the baby off" when nursing. It is a very common, though rarely discussed, hormonal response.
To manage these challenges, you can try:
- Shortening Nursing Sessions: Use a timer to keep sessions brief and manageable.
- Distraction: Read a book or watch a show with your child while nursing to help take your mind off the physical sensation.
- Boundary Setting: If your child is older, you can begin to set boundaries around when and where nursing happens.
- Application of Lanolin or Salve: Using a nipple balm can help protect sensitive skin between sessions.
Supporting Your Body and Supply
While you may not be able to completely stop the hormonal drop in supply, you can support your body to ensure you are as healthy as possible during this dual demand. Pregnancy and lactation both require significant energy and nutrients.
Hydration Is Critical
Your body needs extra fluids to maintain the amniotic fluid for the new baby and to support your remaining milk supply. Drinking water is essential, but adding electrolytes can also be beneficial. Many parents find that drinks like our Lactation Drink Mixes & Powders help them stay hydrated and provide a refreshing way to meet their daily fluid goals. These drinks are designed to be a tasty addition to your routine without adding unnecessary stress.
Caloric Needs
You are essentially "eating for three" when you are pregnant and breastfeeding. This requires a significant increase in caloric intake. Focusing on nutrient-dense foods like avocados, nuts, seeds, oats, and lean proteins can help maintain your energy levels. If you find it hard to eat large meals due to pregnancy nausea, try small, frequent snacks throughout the day. Our Emergency Lactation Brownies are a favorite for many because they make support feel a little more doable.
Lactation Support Ingredients
Certain ingredients, known as galactagogues (herbs or foods that may support milk supply), can still be helpful for some people during pregnancy. Ingredients like oats, flaxseed, and brewer's yeast provide excellent nutritional support. Our Lady Leche is a favorite for many because it offers targeted herbal support in a convenient format.
What to do next:
- Increase your daily water intake by 16–32 ounces.
- Add an extra nutrient-dense snack to your daily routine.
- Monitor your child's behavior and wet diapers.
- Discuss your breastfeeding goals with your midwife or OB-GYN.
Can Supplements Help During Pregnancy?
Many parents wonder if taking lactation supplements can override the pregnancy-related drop in supply. It is important to have realistic expectations. Because the drop is caused by the high levels of progesterone in your system, herbal supplements may have a more limited effect than they would if you were not pregnant.
However, some herbal supports can still provide a foundation for your body. For many moms, our herbal supplements like Lady Leche or Dairy Duchess can be a part of their wellness routine. Always speak with your healthcare provider before starting any new supplement during pregnancy to ensure it aligns with your specific health needs.
This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice.
Is It Safe to Continue Breastfeeding?
A common myth is that breastfeeding while pregnant can cause a miscarriage or preterm labor. For the vast majority of healthy pregnancies, breastfeeding is perfectly safe. While nipple stimulation can cause mild uterine contractions (due to the release of oxytocin), these are generally the same type of "practice" contractions (Braxton Hicks) that occur naturally during pregnancy.
The body is very smart. During a healthy pregnancy, the uterus is not particularly sensitive to oxytocin until very close to the end of the third trimester. Therefore, nursing usually does not pose a risk. For a more detailed overview, see Breastfeeding Through Pregnancy: How to Support Your Milk Supply. However, there are a few medical reasons why a doctor might suggest weaning:
- If you are carrying multiples (twins or more).
- If you have a history of preterm labor.
- If you are experiencing unexplained vaginal bleeding or pain.
- If you have been diagnosed with an incompetent cervix.
If your pregnancy is considered high-risk, always follow the guidance of your medical team. For everyone else, the choice to continue or stop nursing is entirely up to you and your child.
Deciding to Wean or Continue
There is no "right" way to handle breastfeeding during pregnancy. Some parents feel a strong desire to continue, while others find that the combination of exhaustion, nausea, and nipple pain makes weaning the best choice for their mental health.
Choosing to Continue (Tandem Nursing)
If you decide to continue, you are preparing for tandem nursing. This can be a beautiful way to help an older sibling bond with the new baby. After the baby is born, your milk supply will increase significantly as the progesterone levels drop and your mature milk comes in. Your older child may suddenly start nursing more once they realize the "milk bar" is fully open again. If you want a structured foundation, Milky Mama's online breastfeeding courses can help.
Choosing to Wean
If you decide to wean, try to do so gradually. Pregnancy is already a time of big changes for a toddler. A slow transition allows them to adjust emotionally and gives your body time to adapt to the change in demand. You can start by dropping the least favorite nursing session of the day and replacing it with extra cuddles, a snack, or a fun activity.
Tips for Maintaining Comfort and Well-being
Nursing while pregnant is a physical feat. To make it through the day, you must prioritize your own well-being.
- Rest When Possible: The exhaustion of early pregnancy is real. If your child is nursing, use that time to lie down and rest your eyes.
- Adjust Your Positioning: As your belly grows, your usual nursing positions may become uncomfortable. Experiment with side-lying or using extra pillows to support your body and your child.
- Be Honest with Your Toddler: If they are old enough to understand, explain that "mommy's milk is changing" or that nursing hurts right now. It is okay to set limits on how long they stay at the breast.
- Celebrate Every Drop: Remember that even if your supply is low, your child is still receiving comfort, antibodies, and a special bond with you. Every drop counts.
Nutritional Foundations for the Nursing and Pregnant Parent
Your body's nutritional requirements during this time are significant. You are supporting the development of a fetal brain, bones, and organs while also providing for the needs of an older child.
Focus on these key nutrients:
- Choline and DHA: Essential for the baby’s brain development. These can be found in eggs and fatty fish.
- Calcium: Both the fetus and the nursing child need calcium for bone health. If you aren't getting enough in your diet, your body will pull it from your own bones.
- Iron: Pregnancy increases your blood volume, which requires more iron. Include leafy greens, beans, and red meat in your diet.
- Protein: Protein is the building block of life. Aim for a source of protein at every meal.
Using supportive snacks can make meeting these needs easier. At Milky Mama, we believe that nourishment should be accessible and enjoyable. Incorporating a variety of foods helps ensure you aren't running on empty, and you can browse more options in our lactation snacks collection.
Dealing with the Emotional Aspect
It is normal to feel a sense of grief if your milk supply drops. You may feel like the special bond you have with your first child is changing before you are ready. It is important to acknowledge these feelings. Breastfeeding is about more than just nutrition; it is a source of comfort and connection.
Remind yourself that you are still the same loving parent. Whether you are nursing or not, your child still sees you as their safe harbor. You can find new ways to connect, such as increased skin-to-skin contact, rocking together, or reading special stories. Your relationship is evolving, but it isn't diminishing.
Key Takeaway: Your value as a parent is not measured by the number of ounces you produce. Whether you nurse through pregnancy or transition to weaning, you are doing an amazing job.
Looking Toward the Future: After the Birth
The good news is that the supply drop associated with pregnancy is temporary. Once the placenta is delivered after your new baby arrives, your progesterone levels will plummet. This triggers the "onset" of lactation, and your milk will begin its transition back to mature milk.
If you are tandem nursing, you might find that you have an abundant supply because you have two children stimulating production. Your body is incredibly adaptive and will work to meet the needs of both the newborn and the toddler. Many parents find that tandem nursing actually helps reduce engorgement in the early days because the older child can help "drain" the breast more effectively than a newborn.
Conclusion
A drop in milk supply during pregnancy is a natural, hormonal response as your body prioritizes your growing baby. While it can be a challenging transition marked by physical discomfort and emotional shifts, it is a journey many have successfully navigated. By focusing on hydration, nutrition, and setting healthy boundaries, you can continue to provide for your children while taking care of yourself.
- Hormones, not demand, drive the supply drop during pregnancy.
- Most people see a shift toward colostrum by the second trimester.
- Self-care, including rest and proper nutrition, is vital.
- Breastfeeding is generally safe during a healthy pregnancy.
"The transition of milk supply during pregnancy is a testament to how incredible the human body is—it knows exactly how to prepare for the next chapter while still providing comfort to the current one."
If you are looking for ways to support your body during this time, consider exploring our range of lactation-supportive drinks and treats. We are here to provide the nourishment and encouragement you need as your family grows. You are doing a wonderful job managing these big changes, and we are honored to be part of your village.
FAQ
Will my milk supply return to normal during pregnancy?
Generally, no. Because the drop is caused by high levels of pregnancy hormones like progesterone, the supply usually stays lower until after the birth of the baby. Once the baby is born and the placenta is delivered, your hormones will shift again to allow for full milk production.
Can I take lactation supplements while pregnant?
Many herbal lactation supplements can be used during pregnancy, but it is essential to consult with your healthcare provider first. Ingredients like oats and flaxseed found in our treats are generally safe and provide good nutrition, and products like Dairy Duchess should always be cleared with a professional.
Does the change in milk taste affect the toddler?
Yes, the transition to colostrum makes the milk saltier and less sweet. Some toddlers don't mind the change and will continue to nurse for comfort, while others may choose to wean because they no longer like the taste or the slower flow.
Is it okay if my toddler nurses while I'm pregnant?
In a healthy, low-risk pregnancy, it is perfectly safe to continue nursing. Your body will prioritize the needs of the developing fetus first, so ensuring you are eating enough calories and staying hydrated is the best way to support both children.
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