Pregnancy Week By Week

Pregnancy Week 5

BABY

  • Primarily the heart develops. Cardiac beats may not be seen by ultrasound.
  • Face lines, eye, ear begin to take shape. Neural tube is closed.

Pregnancy Week 6

BABY

  • The height reaches 3-5 mm. CRL (crown – rump length)
  • Organ sketches begin to develop. Eye lenses are completed. The formation of ear..

Pregnancy Week 7

BABY

  • CRL (crown – rump length) is 9-11 mm.
  • Eye, nose, ear begin to take shape. Brain continues to develop.

Pregnancy Week 8

BABY

The new name is FETUS. The length is 10-13 mm; the size is of a big nut. Approximate 2 g. Head is bigger in proportion to the body due to rapid growth of the brain.

Pregnancy Week 9

BABY

CRL (crown – rump length) is 20-30 mm. Approximate 2-3 g. The external genital region begins to take shape but the sex is unable to be seen.

Pregnancy Week 10

BABY

CRL (crown – rump length) is 25-35 mm. About 3-4 g. Hand-foot fingers, eyelids, the upper lip, ears have developed. Eyelids are closed. Iris (giving color to the eyes) has started to form.

Pregnancy Week 11

BABY

CRL (crown – rump length) is 40-50mm. About 6-8 g. Organs continue to develop. Kidneys produce urine; the urine is excreted into the amniotic fluid.

Pregnancy Week 12

BABY

50-60 mm in length and about 10-15 g. The most important development is formation of the vocal cords. Swallows fluids, realizes its absorption, and urinates.

Pregnancy Week 13

BABY

The baby is approximately 7-8 cm in length and 25-30 g in weight. Vocal cords have developed. Intestines are located into the abdominal cavity.

Pregnancy Week 14

BABY

The baby's length is 8-10 cm. and weight is about 50 g. The most important characteristic is formation of personal fingerprint. The baby is quite moveable..

Pregnancy Week 15

BABY

About 10 cm in length, 50-70 g in weight. Because feet lengthen rapidly, the head seems even smaller anymore. Hair, nails begin to grow.

Pregnancy Week 16

BABY

11-12 cm in length, 100 g in weight. The head and neck have begun to lengthen. The baby have begun to suck, swallow, yawn, and learned to breathe.

Pregnancy Week 17

BABY

12-13 cm in length, 130-150 g in weight. Footprint has also formed. Bone development continues. The umbilical cord has become thick.

Pregnancy Week 18

BABY

13-14 cm in length, 180-200 g in weight. The arms and legs lengthen. The whole body is covered by a white fatty substance called Vernix protecting the baby..

Pregnancy Week 19

BABY

16-17 cm in length, about 300 g in weight. Hair begins to grow. Milk teeth proliferate. The external genital organs are distinguished thoroughly.

Pregnancy Week 20

BABY

20-25 cm in length, 270-300 g in weight. Baby's movements are felt even more by development of muscles. Immune cells protect the baby from viral..

Pregnancy Week 21

BABY

26-27 cm in length, 350-370 g in weight. The tongue has developed. Functions of swallowing the amniotic fluid are increased even more.

Pregnancy Week 22

BABY

28-30 cm in length, 400-500 g in weight. In male babies, testosterone hormone is begun to be produced. Testicles have descended into the scrotum (ball).

Pregnancy Week 23

BABY

28-30 cm in length, about 500 g in weight. Surfactant begins to develop in the lungs (surfactant provides alveolar sacs in lungs to be filled with air).

Pregnancy Week 24

BABY

30 cm in length, about 500-600 g in weight. Arrived now at viability level. Babies born in this week are tried to be lived in very good intensive care environments.

Pregnancy Week 25

BABY

32-35 cm in length, about 600-650 g in weight. Swallow and holding reflexes have developed. While swallowing the amniotic fluid, sometimes hiccup may happen.

Pregnancy Week 26

BABY

35-36 cm in length, 700-800 g in weight. The baby reacts to sounds, touch, contact, and light from outside. Talk to your baby, make listen to music, contact by touching..

Pregnancy Week 27

BABY

35-36 cm in length, 850-900 g in weight. Cardiac beats can be heard even by listening to abdomen. The baby's movements can easily be noted from outside.

Pregnancy Week 28

BABY

35-38 cm in length, about 1000 g in weight. Hair and nails have grown. The baby can hear you now, recognize you, open and close the eyes, is quite moveable..

Pregnancy Week 29

BABY

36-38 cm in length, 1100 - 1200 g in weight. Adipose tissue continues to be stored. Thermo-regulatory center of the brain has completely formed.

Pregnancy Week 30

BABY

35-40 cm in length, about 1200 - 1500 g in weight. Development of the brain continues. The baby opens and closes the eyelids, is responsive for sound and light.

Pregnancy Week 31

BABY

40 - 42 cm in length, 1500 g in weight. The brain continues to maturate. Nerve cells continue to be produced. Bone development is accelerated.

Pregnancy Week 32

BABY

44 cm in length, 1500 - 1700 g in weight. The head usually is face-down. Because movement area is restricted, the baby moves lesser but stronger.

Pregnancy Week 33

BABY

42 - 43 cm in length, 1800 - 2000 g in weight. The amniotic fluid has reached at the maximal level. The head continues to grow because of development of the brain.

Pregnancy Week 34

BABY

45 cm in length, 2000 - 2200 g in weight. Sleep periods have improved. The baby closes its eyes while sleeping. Hair and nails grow. The amniotic fluid is regenerated..

Pregnancy Week 35

BABY

45 - 46 cm in length, about 2400 g in weight. The adipose tissue regulating temperature in the body is increased particularly in feet and arms.

Pregnancy Week 36

BABY

47 - 48 cm in length, 2500 - 2700 g in weight. The lungs are accepted now to complete their development. The liver, the kidneys work regularly.

Pregnancy Week 37

BABY

48 cm in length, 2800 - 2900 g in weight. Because the baby can produce cortisone hormone, development of the lungs has been completed; after birth, the baby..

Pregnancy Week 38

BABY

49 cm in length, about 3000 g in weight. The head and abdomen diameter are same. Hair and nails grow. Meconium begins to be collected in the bowel.

Pregnancy Week 39

BABY

50 cm in length, 3000 - 3200 g in weight. Weight of the baby can differ from position of the baby and person to person. These are estimated measures measured by computer.

Pregnancy Week 40

BABY

52 cm in length, about 3500 g in weight. Vernix layer has remained only on hands, feet, and back. Development of the lungs continues after birth.