PREGNANCY
Track your baby’s
growth & development in utero, with our
Pregnancy
Milestone Chart
While the size and speed that your baby grows can vary
greatly, this chart gives an idea of how big he is from week
to week as well as what exciting developments are unfolding.
First Trimester
Week 4
Second Trimester
Week 8
Your baby is called an embryo at this stage,
and is the same size as a poppy seed.
Length: 1 mm
Weight: Too small to weigh!
Until the placenta and umbilical cord form, your baby
will have an egg-like sac called a gestational sac for
the delivery of nutrients and blood.
Baby is now a fetus, and he is the size of a kidney bean.
Length: 2 cm
Weight: less than 1 g
Your baby has webbed fingers and toes. Soon this
extra tissue between his digits will be reabsorbed to
reveal individual fingers and toes.
Week 5
At week 9, your baby is the same size as a grape.
Length: about 2.5 cm
Weight: 2 g
His eyelids are beginning to form now, and, once
grown, will stay fused shut until 26 weeks. Little teeth
buds are forming in his gums.
Your baby is the size of a sesame seed.
Length: 2 mm
Weight: less than 1 g
Your baby will start to grow a neural tube, which will
later become his brain and spinal cord. His tiny heart
has also begun to beat, at about twice the speed of
mom’s heart. An ultrasound may be able to detect
this, but often the heartbeat is only heard at around
12 weeks.
Week 6
Your baby is the size of a lentil.
Length: 4 - 6 mm from Crown to Rump (CR)*
Weight: less than 1 g
Despite being so tiny, your baby is now starting to
form facial features like nostrils and eyes. Buds that
will become his arm and leg are sprouting.
Week 7
Your baby is as big as a blueberry.
Length: about 9 mm to 1.3 cm
Weight: less than 1 g
Although your baby’s genitals start to develop now,
you will not be able to tell the gender until he or she
has grown a lot more. By week 7, your baby has the
features and all the internal organs of the future adult.
* All length measurements from now till week 20
are Crown to Rump (CR)
Week 9
Week 10
Your baby is the size of an olive.
Length: 3.5 cm
Weight: 4 g
Your baby’s eyebrows are beginning to grow, and
he has now completely lost his tail.
Week 11
Your baby is the size of a brussel sprout.
Length: 5 cm
Weight: 7 g
From now until week 20 of your pregnancy, your
baby will increase 30 - fold in weight and triple
in length.
Week 12
Baby has a growth spurt and is the size of a granadilla.
Length: 6.5 cm
Weight: 14 - 18 g
Your baby starts developing vocal chords and taste
buds at week 12. The taste buds will only start
working around 27 weeks, picking up the flavours of
mom’s last meal. Baby will often remember flavours
tasted in the womb and show a preference for these
foods in later life – even more reason to eat healthily
while pregnant, moms!
Week 13
Your baby is now as long as a pea pod.
Length: 7 cm
Weight: 23 g
Mom: The pregnancy fog starts to lift
after the first trimester, with many of the
symptoms – nausea, tiredness and
needing the loo frequently – disappearing.
In fact, you might even feel like you did
before you were pregnant!
Week 14
By week 14, your baby is about the size of a lime.
Length: 9 cm
Weight: 40 g
This week sees your baby’s practicing his
breathing capabilities by “breathing” the
amniotic fluid in and out of his lungs. His
bladder will also b egin to function, and he will
urinate into the amniotic fluid. Don’t be
perturbed though, as amniotic fluid
regenerates itself every three to four hours.
He will also be pulling funny faces in the
womb at week 14, like squinting or grimacing,
as he tests out his facial muscles.
Week 15
Your baby is the size of an apple.
Length: over 10 cm
Weight: 70 g
Your baby will be moving around a lot now,
but you are unlikely to feel this so early on
if it is your first pregnancy. He could also get
the hiccups, but they are silent due to the
fluid in his trachea. Your baby’s heart is
growing steadily and he is already pumping
between 18 and 23 litres of blood per
day. He may even develop his hairline
his week!