Your breasts during pregnancy: What you need to know…

Emmy Samtani
Emmy Samtani
Emmy is the founder of Kiindred and mother to 3 little ones. Over the last 4 years, she has worked with some of the most credible experts in the parenting space and is a keen contributor on all things parenthood.
Updated on Jun 14, 2024 · 3 mins read

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You’ve probably already heard from other mamas about the sizable change in their breasts during pregnancy. Breasts can often change during your period, and they’re often one of the first signs you’re pregnant. They will grow, leak, and become super sensitive – how fun!

So, what exactly can I expect from my boobs?

Some common symptoms can include:

  • Tenderness and sensitivity
  • Growing bigger than you ever imagined
  • Your nipples and areolas might get darker and bigger
  • Stretch marks
  • Your nipples might stick out more than usual
  • The veins in your breasts may become darker due to the higher level of blood flowing to support the creation of breast milk

First trimester…

Your body is rapidly changing at this time, with plenty of hormones running throughout. This causes your breasts to grow pretty quickly! This change in size is usually one of the first signs that you are pregnant.

Normally, tenderness and sensitivity come around the same time, which can be treated with an indulgent warm bath (but not too hot as you will learn!)

Finally, you’ll possibly see a change in the colour and size of your nipples, which is very normal.

Second trimester…

As with the first trimester, you’ll usually see the same signs. Your nipples will change and grow, and your boobs may remain sensitive. You might start noticing some small and painless bumps on your areolas. These lovely ridges are known as Montgomery’s tubercles (what a name!) Your body’s way of changing to make it easier to breastfeed.

Around this time your boobs will be working hard to start making milk, which might lead to some leaking of colostrum. Colostrum is known as the ‘liquid gold’ fluid that feeds your little one the first few days of their life. If you see some orange or yellow discharge in your bra, this is likely the cause. Not everyone will notice leaking at this point but it is possible.

Third trimester…

Your boobs are really putting in work to prepare for their big job! They are gearing up for birth, so they may feel heavy and dense. You might notice some more stretch marks, growing nipples, and even darker areolas. The growth might cause you to feel itchy or dry, using your favourite moisturiser or oil might help!

What to do about your bras?


Your favourite bra that you wore five days out of the week, will most likely be put in storage during the next 9 months. Buying a few new and comfortable bras will be essential! An ideal checklist for your bra includes:

  • Good support
  • Wide shoulder straps
  • Adjustable closure
  • No underwire.

Also, look into some sports and sleep bras for ultimate comfort at all times.

If you don’t notice a big change in your size or shape, don’t be worried. This does not affect your body’s ability to make milk for your little one. Every pregnancy and body is different, so accept the changes that may or may not come. Ultimately, your boobs will have a mind of their own!

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