Third Trimester

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The Third Trimester

Week 27-40

acare women health pregnancy third trimester

My belly is really heavy, and I’m always short of breath when I move, is everything alright?

As you approach the birth of your child, you will notice that your pregnancy is becoming quite physically and emotionally demanding. Many women will feel uncomfortable due to their baby’s size and position, causing shortness of breath or heartburn after eating.

As you approach your due date, you may want to see your doctor more regularly to check on your baby’s health and for any signs of impending labour.

Remember that your due date is just an estimate and you may well go past it with no sign of your baby, but remember the wait is almost over!

acare women health pregnancy 3rd trimester

The Role of Your Hormones in the Third Trimester


High progesterone levels help loosen the ligaments and joints throughout your body to allow your womb to expand to hold a full-term baby.

Hormones help in preparing your breasts to produce milk to feed your baby. You may find that your breasts will continue to grow and become more tender.

Some women will find they leak small amounts of watery pre-milk called colostrum during the third trimester.

At the end of my third trimester, how big is my baby?

By week 39, your baby is roughly 50.8 cm long and weighs anywhere from 2.7-4.1 kg or possibly more. You won’t know for sure until your baby finally arrives at around 40 weeks.

At this stage, your baby will have

  • A layer of fat to give him/ her that new born baby cuteness
  • Fully developed hearing
  • Mature lungs. The baby will be able to breathe his first breath when he enters the world.

Full size baby:

Average fetus = 48cm- 53cm/ 2.8kg - 4kg

Get all essential nutrients, including iron, every day. Getting enough iron prevents anemia, which is linked to tiredness, pre-term birth and low-birth weight babies. Ask your doctor about taking a daily prenatal vitamin or iron supplement.

acare women health pregnancy 3rd trimester baby size

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