Surprising ways your boobs change in pregnancy

Pregnant boobs

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Pregnancy is full of surprises, and it's no surprise a fair few affect your boobs. Welcome to the world of puffy nipples, leaks and much bigger bras...

When you’re pregnant, you’ll have hormones flying around all over the place which, amongst other things, has a big impact on your breasts. In fact, they only complete their full development when you’ve experienced pregnancy.

According to Marley Hall, midwife and mum of 5, our breasts change ready for feeding. 'Female breasts change during pregnancy simply to get ready for feeding a baby. It’s the hormonal changes that take place during this time that have a huge impact on our boobs.'

'There are several breast changes that occur which may or may not be noticeable such as:

  • An increase in size caused by the milk ducts enlarging

  • Darkening and enlargement of the nipple and areola

  • Prominent veins

  • Heavy tender breasts – varies from woman to woman

'Some women will notice these changes early on in their pregnancy and some won’t report noticing any changes at all.'

'Many women will notice the changes detailed above in the weeks after conception but it’s the final few weeks of pregnancy that sees the most change. During this time the breasts and nipples become larger as the cells that produce colostrum, the first milk, multiply and grow rapidly. Some women may notice some slight leakage of colostrum coming from the breast. It can appear yellowish, white or even clear in colour. Not everyone experiences leaking from the nipples during pregnancy and it doesn’t mean that you wont have any milk if you don’t,' says Marley.

Millie Mackintosh recently revealed that she went up a staggering 10 bra sizes during the course of her pregnancy...

Common breast changes during pregnancy

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1) Sore boobs

If this is your first pregnancy, you’re probably wincing when you put on your bra as your breasts will no doubt be quite sore for the first few weeks – one of the first clues that you’re pregnant.

The most tender part is probably your nipples, because of the increased levels of the hormone progesterone and the growth of the milk ducts. Even cold temperatures may cause your nipples to tingle, so try to keep them warm.

Trade in your usual bra for one that isn’t underwired and is designed for pregnancy and encourage your partner to keep his hands off your chest, until the pain subsides.

Real mums share how their boobs changed during pregnancy


'I knew I was pregnant before I did a test because my boobs changed overnight - they grew several sizes and became bowling balls. During pregnancy they were so sensitive, even the duvet at night was too heavy and painful. Even before my bump was showing, I could no longer sleep on my front at night (and still can't, three years on!). I had to move to wireless bras at about 5 months. Nothing could help relieve the tenderness, and there wasn't a bra around that could support them enough. What helped was lots of lotions and creams, both to keep the skin soft but also to just give them a bit of self-care. Soft sleep bras also helped when I was pregnant, and afterwards' - Sophie Knight, mum to Eli.


'Interestingly and something I never knew before getting pregnant or even for the whole 8 months of being pregnant...I was able to produce milk before my baby was born! This is known in the parenting industry as 'colostrum harvesting'. So at around 8 months pregnant, during one of my last midwife appointments, my midwife gave me a couple of syringes and said to 'express some milk if I could'. I had noticed already that me breasts had grown in size, probably about two cups larger at this point. So I sat one evening with my husband and expressed two syringes full of milk (colostrum). After speaking to My Expert Midwife, Midwife Leslie on Mother&Baby's Instagram live for World Breastfeeding Week 2020 (LINK TO THE LIVE VIDEO), she informed me that there are also things such as 'egg cups' which you can buy and express the milk into there and then deposit into your syringes. I was express my droplets straight into the syringes! You can imagine the sight. So during pregnancy, my breasts were enlarged by a couple of sizes, I started to use breastfeeding bras and were clearly full of milk right up fo 40 weeks and 4 days pregnant, when my son, Parker arrived into the world' - Maria Martin, mum to Parker.

'For me when I was pregnant there was lots of soreness and tenderness during pregnancy. Once I had my babies I found that I was engorged a lot so I had lots of milk and I felt rockhard at points and they looked like they had veins popping out all over the place. During breastfeeding I have found that my breasts have changed shape and changed size and often I look in a mirror and they're different sizes! They will be really big one day and really small the next. One day one will look high and the other hanging low – ha ha ha ha!' - Chaneen Sailee, mum to Jasmine and Ocean.

Ways to help tender boobs in pregnancy

Sore and tender boobs are bound to affect you at some point during your pregnancy, but to help ease the pain a little, there a some things you can do to help says Marley.

'Wear a good fitting bra as this will help to support heavy tender breasts. Some women find that their nipples & areola become dry which can and to the soreness so moisturising them with a light cream or petroleum jelly can help.'

How did your boobs change during pregnancy? Let us know over on #MumTribe - our exclusive Facebook group, just for you and all your mum friends!

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