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Week 1
Your last menstrual cycle has just ended and your body is getting ready for ovulation. -
Week 2
Ovulation occurs. The sperm and the egg join in the fallopian tube and fertilization occurs. -
Week 3
When the egg meets the sperm, it travels from your fallopian tube down to your womb. The fertilized egg begins dividing. You probably will not know you are pregnant until after a few weeks. -
Week 4
An embryo has developed and is about the size of a poppy seed. -
Week 5
Organs begin to develop. The heart, brain, blood vessels, and spinal cord develop. -
Week 6
The embryo is in a C-shaped position. The heart begins to pump blood. -
Week 7
The brain, face, and hands quickly begin to form. The head is 1/3 the size of an entire embryo. -
Week 8
The body of the embryo begins to straighten. Also, brainwave activity starts to occur. -
Week 9
As the body begins to develop, the legs begin to move. The hands of the embryo begin to touch the face. -
Week 10
The embryo is now called a fetus. Breathing movements begin to occur. -
Week 11
Almost all of the organs are developed and functioning. The genitals take on the form of either a male or female. -
Week 12
The baby progressively develops and can weigh as much as half an ounce. The baby's face begins to look more human. -
Week 13
The baby is 2 1/2 to 3 inches long. The fetus begins to produce and excrete urine. -
Week 14
The fetus' liver begins to secrete bile. The pancreas produces insulin. -
Week 15
The nose and lips are formed. it is about 5 inches in length and weighs 2 ounces. -
Week 16
The baby's bones are hardening which means you will begin to feel fetal movement. The baby weighs about 2.8 ounces. -
Week 17
The baby keeps developing rapidly. It is about as wide as the size of your palm. -
Week 18
As the fetus develops, it may change positions frequently. The fetus begins to hear sounds in your body. -
Week 19
The baby continues to grow. It is 8 1/2 ounces and about 6 inches long. -
Week 20
A substance called vernix caseosa protects the fetus' skin from the aqueous environment. The sweat glands begin to form. -
Week 21
The baby starts to put on weight by drinking an amniotic fluid for hydration and nutrition. The baby's eyelids are still closed. -
Week 22
As the baby enters the 5 months of existence, the fetus' organs are becoming more functional. Blood is traveling through the umbilical cord. -
Week 23
The fetus is about 11 1/2 inches long and weighs about 1 pound. The body proportions are similar to a newborn's. -
Week 24
The baby starts to develop real hair on the head. Some babies may now kick in responce to sounds. -
Week 25
Your baby is about the size of a small bag of sugar. It can touch and hold its feet. -
Week 26
The baby's hearing system if completely formed! It will become very sensitive to sounds. -
Week 27
The baby is about the size of a small pot roast. It weighs two pounds and is 14 to 15 inches long. -
Week 28
The fetus' bones are still very soft but are almost fully developed. The fetus can taste and smell. -
Week 29
It is believed that babies can dream at around this time! The fetus is developing eyelashes and adding fat. -
Week 30
The baby's brain continues to develop at a rapid pace. Its eyes are able to tract light. -
Week 31
The baby will start to run out of room as it gains weight. You should feel about 10 kicks an hour. It weighs 2 1/2 and 3 1/2 pounds. -
Week 32
All five senses are developed. It is about 17 inches long and weighs 4 pounds. -
Week 33
It is likely that the baby has moved to a head-down position. Your baby is in the process of receiving your antibodies. -
Week 34
The baby is about 18 inches and weighs 5 pounds. It can blink and open its eyes. -
Week 35
The baby is becoming ready for birth! The nervous system and immune system are still maturing. -
Week 36
Your baby still has one month left to go! It is 20 1/2 inches and 6 pounds. -
Week 37
The baby's intestines are building up meconium. The fetus will start to move into delivery position. -
Week 38
The baby is fully developed. It is 21 1/2 inches long and weighs 7 1/2 pounds. -
Week 39
Your baby is ready to be born! However, it is still growing hair and adding weight. -
Week 40
The baby is fully formed and ready to be born!
