Pregnancy: Through the Trimesters Part II

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Journey with us as we take a look at what goes on in the womb as baby grows in our week-by-week guide.


Week 13
Your baby’s tiny fingertips now have fingerprints!

Week 14
Your baby can now frown, squint, and grimace. With brain impulses, his tiny facial features form one expression after another. By this week, your baby will sprout some fine hairs on his face. This soft and colourless hair is called lanugo and will eventually cover baby’s entire body until it is shed just before delivery.

Week 15
Although his eyelids are still fused shut, he can sense light and is likely to move away from the beam if you were to shine a flashlight at your tummy.

Week 16
Strawberries, ice-creams, cupcakes, lollipops and pastel pinks versus cars, trucks, planes, trains, robots, baseballs and pastel blues! Get ready for the gender announcement at your prenatal visit this week!

Week 17
Your baby’s skeleton is changing from soft cartilage to bones.

Week 18
A protective layer known as myelin is beginning to form around his nerves, a process that will continue through the first year of your baby’s life.

Week 19
Your baby will probably be able to hear now. He hears sounds such as your heartbeat and may even be startled by loud noises. Be sure to start talking, reading and singing to him!

Week 20
As he hits the halfway mark of gestation, your baby is producing meconium—a black, sticky by-product of digestion.

Week 21
Bone marrow becomes the major site for red blood cell production in your baby.

Week 22
Those gentle fluttering feelings in your tummy known as quickening are your baby’s first movements. Quickening is probably what most mummies miss about their pregnancies as it is magical beyond words!

Week 23
Your baby begins to accumulate fats.

Week 24
His lungs are gaining the ability to produce surfactant—a substance that keeps the air sacs in our lungs from collapsing and sticking together while we exhale. He sure is getting ready to breathe properly in the outside world!

Week 25
Your baby’s nostrils that have been plugged up until now begin to open, allowing him to start taking practice breaths.

Week 26
Your baby’s reproductive system continues to develop. In baby girls, the uterus and ovaries are in place and the vagina is developed. In baby boys, the testes have begun to descend into his scrotum.

Week 27
Your baby’s various bodily systems still need to fully mature, but if born now, he has a good chance of survival with a lot of medical help.

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