The Fourth Trimester: The First Three Months

Yawned Baby

From the moment you saw those two red lines, you instantly knew that your life was about to change. Pregnancy is a completely new journey where your body goes through a lot of changes to accommodate a growing human being inside you.

Most of us know that there are only three trimesters during a pregnancy, lasting from weeks 27 to 40, the third trimester is when you’ll feel the heaviest due to the growing baby and your body will begin to prepare for delivery. With each passing day, you and your body prepare to bring your baby into the world.

The fourth trimester is actually the first three months of your baby’s life, according to  Dr. Harvey Karp. Dr Karp believes that babies would choose to spend a few extra months inside the womb if they could. They are delicate, fragile and in need of constant support and feeding. 

The importance of the fourth trimester for your baby

Your baby is extra fragile during the first three months after birth and he will rely on you for everything — from feeding to emotional support. Newborns rely on their reflexes and instincts to control their movements and behaviour, relying on you for everything else. During this stage, your baby’s senses are still developing, which means that they still has blurred vision and they might not have clear hearing yet.

Being out of the womb can also be an overwhelming experience for your baby, leaving the comfort and safety of the womb and into the big, wide world. 

In the first three months after birth, you will most likely see these developments in your baby:


Newborns sleep a lot during the fourth trimester, they don’t have a concept of night and day yet and rather sleep as and when they need too. It will take them a while to settle into a proper sleeping pattern. 


Your baby will cry more during the fourth trimester than any other time in their life, and it’s completely normal. Since your baby won’t have a fixed routine during this time, it’s okay to feed or soothe him whenever he starts crying.


On average, your baby will need to feed at least eight times within 24 hours. Babies have a small stomach and will need to feed little and often. Breastfeeding mothers are not likely to produce lots of milk immediately but the milk they do, is packed of nutrients for your baby. Remember that quantity is not as important since your baby’s tummy is the size of a marble. After 3-5 days, you should expect your milk production to increase significantly.

As you spend more time with your baby, you’ll get to learn cues from them like opening their mouth or sucking their fingers to signal that they need to feed.

Your baby needs you the most during the first three months of their life. As they adjusts to the outside world, they will go through an amazing journey of discovering things and developing their senses, crucial for development and growth. 

The best thing that you can do is be with your newborn, be sensitive to their needs and wants. 

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