During the nine months of pregnancy your baby will go through many changes.

2 Weeks (Day 14):

• Fertilized ovum is a layered disc on the wall of the uterus
• The layers will form every organ and tissue
• Mother misses her first period

4 Weeks:

• The embryo is now .75 - 1 cm in length and weighs 0.01 oz
• The embryo is starting to develop eyes, ears, nose, spin, mouth, digestive tract and nervous system
• The simple tube shaped heart starts to beat
• Arms and leg buds are forming

8 Weeks:

• Your baby is now 2.5 cm (1 in) in length and weighs 8g (0.25 oz)
• All the organs are formed
• The heart beats 40 - 80 times/minute, pumping blood
• Facial features are now formed and the head is large in comparison to rest of the body
• The limbs are well developed and the arms bend at the elbow

12 Weeks:

• Swallowing reflex is mastered by thumb sucking

Click here to learn more about how your baby grows.

16 Weeks:

• The baby is 10 - 17 cm (6 in) in length and weighs 120g (4oz)
• The face looks more human as the nasal septum and palate close, the head has some hair and the ears now stand out from the head
• You may be able to hear the heart beat with a stethoscope now
• You may be able to feel the baby move now, or closer to 20 weeks
• The baby's hand can grasp, and it is now kicking actively

20 Weeks:

• Your baby is 25 cm (10 in) in length and weighs 220g (10 oz) He is about half his birth length
• Eyebrows and lashes appear
• The skin is very thin, covered with lanugo (fine downy hair) and the oil glands appear
• The baby has his own routine of sleeping, turning and kicking and he has a favorite position inside the uterus
• You may be able to feel the baby move or feel his hiccups

24 Weeks:

• Your baby is 28 - 26 cm (12 in) in length and weighs 600 - 900g (1.25 - 2 lb)
• Eyes open between now and 26 weeks
• Skin is red and wrinkled and the body looks lean
• Primitive breathing movements begin
• Baby touches his or her own face, arms, legs, body, the insides of the amniotic sac and the umbilical cord
• Meconium collects in the bowel and will be your baby's first bowel movement

28 Weeks:

• The body is still lean but is less red and wrinkled
• The baby can now store iron, calcim and other nutrients
• The baby is begining to be able to regulate his own body temperature

32 Weeks:

• Baby is 38 - 43 cm (16+ in) and weighs 1.8 kg (4 lb)
• Fat is developing as an insulation to help protect against temperature changes at birth
• Iron is beng stored in the liver
• The baby is aware and responds to sound
• The baby has developed the sense of taste (sweet and sour)
• When the eyes are open the pupils respond to light
• Baby responds to pain
• In a boy, the testicles may begin to descend into the scrotum

36 Weeks:

• The baby is about 48 cm (18 in) in length and weighs 2000 to 2600g (4 to 6 lb)
• Skin is pinker and smoother, as more fat is formed
• Lanugo is mostly gone and the fingernails have grown to the tips of the fingers
• Continues to gain immunity from the mother's antibodies which can give protection for up to 6 months

40 Weeks:

• Babys lungs are mature
• There is varying amount of hair on its head
• Fingernails go beyond the finger tips
• Arms and legs are flexed
• Eyes are slate coloured
• Testes are now in the scrotum of most baby boys
• Labia majora is well developed on the baby girls

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