When you reach month six of your pregnancy, you’ll see that your stomach has grown significantly and is now very rounded. You’ll also begin to feel this extra weight quite a bit as the baby starts to get bigger quickly. The organs in the fetus are also starting to grow into proper size, ready to work in the outside world.

Your baby’s weight will quadruple by the end of month six

The relative weight gain at this stage is significantly more than at any other stage up until now. At the start of week 22, your baby will be around 250gm. By the end of the month, which is also the end of the second trimester, your baby can easily be four times that weight. Unfortunately, you’ll definitely feel this rapid weight gain – usually in your back.

A bonus to this increase in size is that you can now start to see greater detail on an ultrasound. You can see the finer features of your baby’s face and the little fingers and toes. It can be a very exciting time.

Week 22

This week is a bridging week that ends off month five and begins month 6. This is because counting in months isn’t very exact, and weeks give you a more accurate picture of where your baby’s development should be.

At the start of month six, your baby is virtually fully formed. If it were born now, it would be able to function, but only barely because of its very small size. The next four weeks are crucial to get your baby big enough to survive in the outside world.

Your baby now has eyelashes, eyebrows and all of its facial features. Even the mouth is ready to start producing teeth after birth.

Week 23

This is the point where your baby starts to get ready to breathe in the outside world. The pulmonary vessels will develop fully at this stage. These are the arteries and veins that bring blood to and from the lungs.

Your baby’s skin will also look quite wrinkled in an ultrasound. This is completely normal, because babies grow quite a bit after they are born and need the extra skin to grow into.

Many women notice at around this stage that their feet and ankles swell up. This is from the extra weight they are carrying, which affects their blood circulation. The best way to combat this is by resting with your legs elevated.

Week 24

At the end of this week, you’ll be half way through the last month of your second trimester and your baby will probably be around 500gm. The space inside your abdomen is becoming fuller and fuller as your baby grows. One thing you’ll definitely start to notice is that any movements from your baby can actually be quite painful thanks to the lack of space.

Your baby’s lungs are now almost fully developed and ready for the outside world. Soon your baby will start to mimic breathing in order to get its body ready for the process when it leaves the womb.

Week 25

Your baby is now starting to respond to outside stimuli that it can see and hear. If you shine a light on your stomach, your baby’s head will actually turn away from the source because it can see the light and it doesn’t know what it is.

Hair has also grown on your baby’s body by now. The hair on its head at this stage is the hair it will be born with.

It’s likely that you’ll find yourself becoming more anxious in this period. This is due to your hormones changing, yet again. The best way to overcome the stress is to do some light exercise – ask your doctor for advice if you aren’t sure – and eat well. Be sure to also get plenty of rest.

Week 26

By the end of this week you’ll have been pregnant for six months officially, and moving forward, you’ll be in your third and final trimester. Your baby should now be around 1kg in weight – four times bigger than it was at the beginning of the month. From now on, it’s all about gaining fat as your baby prepares to face the unknown temperatures and climate of the outside world. This extra fat will also be an energy source for your baby in its first few days of life.

Due to this weight gain, it’s natural for you to feel strain on your lower back and to feel like your posture has changed. Remember to get as much rest as possible and keep your back well supported.

Readers’ questions:

What does my baby look like at the six month mark?

Your baby is now exactly how it will look on the day it’s born, just very small and underweight. In month six, babies start to put on a significant amount of weight quite quickly. They go from 250gm at the beginning of the month to around 1kg at the end – and they still have some growing to do.

However, their faces have formed into the features they are going to be born with, including eyelashes, eyebrows and the hair on their heads.

When should I consider myself six months pregnant?

It can be quite tricky to calculate this due to everything being counted in specific weeks and then translating that into months. Week 22 is the end of month five and the start of month six. By the end of week 26, you have completed month six and are heading into month seven and your third trimester.

What is the right weight for my baby at six months?

It’s important to remember that each baby and each pregnancy is different. The weight and other measurements may vary according to a wide range of factors. However, the average weight by the end of month six should be around 1kg.