WEEK 31: Already half their birth weight
Your baby is bigger, but they’ll put on a few more pounds before birth. Your breasts will feel heavier and may be producing colostrum. See how else you are both preparing for the big day.

31 weeks pregnant: Pregnancy tips and nutrition

In Pregnancy

    4-minutes read

    At a glance

    Your baby has now reached 50% of its birth weight

    Your breasts are getting bigger – ready for breastfeeding


    Your baby will gain 1-1.5kg more before birth

    Make sure you eat a varied diet for you and your baby’s energy needs

    Baby should have reached about 50% of its birth weight by now, and still has a few more centimetres to grow as well.

    Baby's development at 31 weeks

    Your little one is still growing bigger and bigger. It should have reached about 50% of its birth weight by now, and still has a few more centimetres to grow as well.

    Meanwhile, baby is starting to get in position for the big day. 95 % of pregnancies are delivered with the baby upside down, top of the head forward. This is called the ‘presentation’ and will be determined during your next ultrasound.

    We would usually expect baby to be cephalic or head down from about 36 weeks, but at 31 weeks baby is still free to move around and be in any position.

    Your body

    If you are surprised by the size of your breasts, remember that your body is getting ready to breastfeed. The big day is getting closer! Don’t be worried if you find yellow flecks on your blouse or T-shirt once in a while either, it’s just colostrum. And it means your breasts are getting ready to feed your little one.

    The colostrum you give your baby in the first few days contains all the antibodies that boost baby’s immune system immediately after birth. Not every woman produces colostrum before the birth, but if you do, protect your clothing with a nursing bra and breast pads.



    As your baby will be putting on an additional 1 to 1½kg between now and the big day, you need to adjust your pregnancy diet a bit.

    That doesn’t mean you need to pack in loads more calories, just make sure you are eating for both you and your baby’s energy needs.

    Lots of fresh fruits and veg, good lean proteins, whole grains and ‘good’ fats. It’s the best way to ensure that baby has all the necessary nutrients, without using any of the reserves you need for birth.

    Just remember, what you eat now can have a real and positive impact on your child's future health.

    Pregnancy tips

    The size of a mother’s breasts has absolutely nothing to do with how well she can feed her baby. Even if you’re on the smaller side, you should have no problem breastfeeding your baby. Smaller women don’t make any less milk than larger women, because the amount of milk you produce is determined by baby’s appetite and sucking mechanism, as well as hormones. It's a joint effort of you and your little one.

    To find out more about breastfeeding, click here.


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    Important advice to mothers

    The World Health Organisation (WHO) recommends exclusive breastfeeding for the first 6 months of life. SMA® Nutrition fully supports this and continued breastfeeding, along with the introduction of complementary foods as advised by your healthcare professional.