This blog is written by registered midwife Aliza Carr from Bumpnbub.

Growing and birthing a baby is an incredible feat— not to mention your body then goes on to produce milk to feed and nourish your baby. Here’s a quick overview of what to expect when it comes to breast changes through pregnancy and postpartum.

During Pregnancy

Tenderness & Growth
Hormones like oestrogen and progesterone increase blood flow and encourage breast tissue growth, so they may feel tender, fuller, or heavier. You might need to size up in your bras—and that’s perfectly normal. Breast tenderness is often one of the first signs you might be pregnant!

Nipple & Areola Changes
The areolas often become darker and larger, and you may notice small bumps called Montgomery’s glands. These help keep the nipple area lubricated, preparing for breastfeeding.

Visible Veins
More blood flow equals more prominent veins under the skin, another normal sign your body’s getting ready to produce milk.

 

 

Postpartum
Milk “Coming In”
Around day 3–4, your breasts may suddenly feel engorged or rock-hard. Frequent feeds, gentle massage, and warm compresses can ease the discomfort and help milk flow.

Leaking & Let-Down
You might leak in between feeds, especially when you hear or think about your baby. Using a Haakaa Ladybug during this time can be a lifesaver - simply pop into your bra and save that liquid gold. 

Fluctuating Shape & Size
Your breasts can feel different from one feed to the next. Around 6-8 weeks, your milk supply starts to establish, and you’ll notice fewer fluctuations. 

 


Extra Tips 

● Stay Hydrated: Your body needs plenty of fluids to keep up with milk production.

● Self-Checks: Even while breastfeeding, stay on top of regular breast checks for any lumps or unusual changes. It’s important to get anything unusual checked.

● Seek Help When Needed: If you have ongoing pain, redness, or flu-like symptoms (signs of mastitis), chat with a midwife, GP, or lactation consultant. There’s plenty of help and support out there for breastfeeding - if you’re stuck, look for a local breastfeeding group lactation consultant, or head to your GP.

We hope this helped you to better understand the incredible journey your body goes through when preparing to, and actively breastfeeding. 

*This is for educational purposes only and does not replace the need for medical advice. Blog written by Aliza Carr, registered midwife. 


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