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Week 1
The first week of pregnancy is a womans last menstrual cycle. The uterus thickens to prepare to fertilize the egg. -
Week 2
The egg attaches to the wall of the uterus. With the sperm, the egg begins to fertilize. -
Week 3
The sperm and egg merge into one single cell. Chronozones inside the cell start deciding the baby's personality such as hair and eye color. -
Week 4
The ammonitic sac starts to form around the baby to protect it while he/she grows. Cells also divide to create the organs for the baby. -
Week 5
The placenta begins to develop and a fibrin clot closes the hole to the uterus. The embryo grows to 2mm and gets oxygen and nutrition through the placenta. -
Week 6
The baby's heart begins to beat. The brain is also divided into five sections and they eyes start to form. -
Week 7
Arms and legs begin to form. The organs and facial features are being formed as well. -
Week 8
The arms and legs continue to grow and develop elbows and toes. He/she also starts to move. -
Week 9
The heart finishes forming and the nose and upper lip is being formed. -
Week 10
The baby is now a fetus. The neck begins to shape and the mouth cavity and the nose are joined together. -
Week 11
The fetus is able to swallow and move tongue. The fingers and toes are also separated from each other and the baby is sensitive to touch. -
Week 12
The finger and toenails start to show. The fetus can now move more spontaneously and can get the hiccups. -
Week 13
The baby starts to kick and can open and close its mouth. It is almost possible to see if it is a boy or girl. -
Week 14
The fetus starts urinating and the ears are finished developing. Hair also starts to appear on the skin. -
Week 15
The bones and muscles continue to develop and the skin is very thin. -
Week 16
The baby learns how to breathe and is able to hear outside voices. -
Week 17
Fat begins to form under the skin. The eyes stay closed but are looking forward. -
Week 18
The baby is able to hear sounds and can be startled. The vernix forms around the skin to protect it. -
Week 19
The genitals are recognizable! Hair has also appeared on the scalp. -
Week 20
Halfway through pregnancy. The baby can recognize their mothers voice and the skin is thicker. -
Week 21
The fetus has almost all of the nourishment it needs and starts absorbing small amounts of sugar. -
Week 22
A regular sleep schedule forms. Taste buds start to form. -
Week 23
The baby weighs about a pound. The baby turns from side to side and almost flips inside the womb regularly. -
Week 24
The lungs form the respiratory branches and the baby practices breathing. -
Week 25
The brain quickly grows and brain cell develop. The sex organs finish developing. -
Week 26
The eyes start to open. The brain will start to respond to touch and is more active. -
Week 27
The baby has eyebrows and eyelashes and the eyes can blink. -
Week 28
Milk teeth have developed under the gums. The hair is more visible and the eyes move more often. -
Week 29
The brain is developing neurons. The muscles and lunch continue to mature and the fetus can respond to pain. -
Week 30
The skin becomes smoother. The baby is heavier and controls its own body temperature, -
Week 31
The baby can respond to light. The lungs and digestive system are maturing. -
Week 32
The fat layer under the skin thickens. The baby wont move as much because of lack of space. -
Week 33
The baby gains some weight and looses his/her baby fuzz. He/she is also using it's lungs to practice breathing. -
Week 34
The fingernails are completely formed and the eyes completely open when awake. -
Week 35
The baby's lungs are almost fully developed. If they were born now, they have a high chance of survival. -
Week 36
The baby gains about 6 pounds. He/she may drop into the birth canal. -
Week 37
Baby weighs about 7 pounds and the water could break at any time. -
Week 38
The baby has finished developing and may reach final birth position. -
Week 39
The baby is in its final birth position and continue to kick and punch. The baby fuzz has completely fell off. -
Week 40
The baby is ready to be delivered.
