Should I Be Worried About Breast Changes During Pregnancy? What to Expect

As your body goes through changes during pregnancy, you may notice breast soreness, growth, tenderness or other breast symptoms. The good news is, most breast changes during pregnancy are a natural part of your body preparing for breastfeeding and nourishing your baby after birth. Knowing what to expect can help you feel more at ease and understand when you might need extra support. 

In this article, we’ll explore why your breasts change during pregnancy, what common changes occur and what’s “normal” versus what may need evaluation. 

Most breast changes during pregnancy are common and related to hormones preparing your body for breastfeeding. However, if you notice breast changes that concern you, we encourage you to contact us for an appointment. We’ve provided expert care to thousands of women in the Raleigh, Chapel Hill and Triangle area for decades and we would love to support you through your pregnancy and beyond. 

Why Do Your Breasts Change During Pregnancy?

Breast changes during pregnancy are caused by surging levels of hormones such as estrogen, progesterone and prolactin. These hormones stimulate the growth of milk-producing glands, increase blood flow to the breasts and prepare your body for breastfeeding.

Each hormone plays an essential role:

• Estrogen stimulates growth and elongation of the milk ducts, which deliver milk.
• Progesterone builds milk-producing glands and lobules to prepare for lactation. 
• Prolactin is responsible for the production and secretion of milk.

These changes often begin early in the first trimester. While the experience can vary from person to person, most women will notice some breast changes throughout their pregnancy. 

What Common Breast Changes Happen During Pregnancy?

You may experience a variety of breast changes during pregnancy, most of which are normal. 

These changes include:

• Breast tenderness or soreness. 

• • This is often one of the earliest signs of pregnancy, beginning around 4 to 6 weeks after conception. 
  • It’s usually most intense during the first trimester (weeks 1 to 12). 
  • Your breasts may feel swollen, tender and more sensitive to the touch than usual. 

• Breast growth and fullness.

• • Your breasts may become larger and heavier throughout your pregnancy as milk-producing glands grow and blood flow increases. 
  • As your breasts grow, your skin stretches, which may cause itching, dryness or stretch marks.
  • Steady enlargement may occur in the second and third trimesters, with breast growth varying by person.

• Changes in nipples and areolas. 

• • Your nipples and areolas may become larger and darker due to hormonal changes that affect skin pigmentation. 
  • This may help your newborn locate the nipple more easily during breastfeeding. 

• Montgomery glands become more noticeable.

• • You may notice that the small bumps on your areola, known as Montgomery glands, have become larger and more visible. These glands produce natural oils that help moisturize and protect the nipples.

• Veins become more visible. 

• • Your body increases blood volume during pregnancy to deliver nutrients and oxygen to your developing baby and prepare your breasts for breastfeeding. 
  • When this happens, veins under the skin on your breasts may become more visible. 
  • This typically occurs early in the first trimester; veins may remain prominent throughout your pregnancy.

• Leaking colostrum. 

• • Around the second trimester, your breasts may begin producing colostrum, a nutrient-rich fluid sometimes called “first milk.”
  • This fluid helps nourish and support your newborn during the first few days after birth. 
  • You may notice small amounts of colostrum leaking from your nipples before delivery, which is normal and a sign your body is preparing for breastfeeding. 

Are Breast Lumps During Pregnancy Normal?

While it’s natural to be concerned if you find a breast lump during pregnancy, many breast lumps that develop during this time are non-cancerous and related to common hormonal changes in your breast tissue.  

Benign (noncancerous) causes of breast lumps may include: 

• Cysts, fluid-filled sacs that develop within breast tissue
• Galactoceles, milk-filled cysts caused by blocked milk ducts
• Fibroadenomas, solid, noncancerous lumps that may become larger due to hormonal changes 

You may also notice that your breasts don’t change symmetrically during pregnancy. This is common and due to anatomical and hormonal differences in your breasts. It’s typically not cause for concern.

Although many breast lumps found during pregnancy are benign, it’s important to have any new lump or breast change checked out. Your breast tissue may feel different during pregnancy, and an evaluation can help put your mind at ease and ensure that there isn’t a more serious concern. 

How Will Your Breasts Change After Giving Birth?

Your breasts will continue to change after delivery as your body shifts from preparing for breastfeeding to active milk production. 

Immediate changes may include:

• Milk “coming in” during the first two to four days after childbirth, which can make the breasts feel fuller, heavier and more swollen
• Milk leakage between feedings, when your breasts are full or when you hear your baby cry
• Other changes related to breastfeeding, such as:
  • Breast engorgement 
  • Sore or cracked nipples 
  • Mastitis (inflammation or infection of breast tissue) triggered by milk stasis (trapped milk)

Longer-term breast changes may include changes in size, fullness, skin elasticity and breast shape. It’s normal for your breasts to look and feel different after pregnancy and breastfeeding.

While many breast changes during pregnancy are harmless, if you notice any of these signs, we encourage you to contact us:

• Persistent pain in one spot
• Breast redness or warmth
• Hard, fixed lumps that don’t change
• Significant changes that only affect one breast
• Nipple discharge that is bloody or isn’t colostrum
• Fever accompanied by any breast symptoms

How to Care for Your Breasts During Pregnancy

As your body prepares for breastfeeding, normal changes in your breasts can cause discomfort.

These simple steps can help you feel more comfortable:

• Choose a well-fitting maternity bra, sports bra or other supportive bra to reduce discomfort and provide extra support as your breast size changes. The right bra can help reduce soreness, minimize strain on the back and shoulders and improve your overall comfort during pregnancy. 
• Choose soft, breathable fabrics like cotton, which can help lessen irritation.
• Apply moisturizer to breasts regularly to help alleviate dryness and itching as your skin stretches.
• If breast tenderness makes it difficult to sleep, you can try wearing a soft sleep bra for added support. 
• Avoid harsh soaps or excessive scrubbing, which can dry out and irritate sensitive skin.

Group sessions in our Centering Pregnancy® program cover newborn care and lactation, and our midwifery team provides continuous postpartum support and breastfeeding assistance.

Chapel Hill OBGYN: Expert, Compassionate Support Through All Life’s Stages

Most breast changes during pregnancy are nothing to be concerned about and are simply your body’s way of preparing for breastfeeding. However, it’s important to stay aware of your breasts and reach out to us if you notice any unusual symptoms. We want to deliver peace of mind and help ensure you have the healthiest pregnancy possible through every step of the journey.  

We’ve provided expert care to thousands of women in the Raleigh, Chapel Hill and Triangle area for decades. We invite you to contact us for an appointment today and see why we’ve been continually recognized as the best OBGYN practice in Orange and Durham counties.