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week 1
The last menstrual period. -
week 2
the endometrium is being formed. 3-10 eggs are given a hormonal message to mature and prepare for ovulation. -
week 3
Egg traveles down the fallopian tube around day 14. Just 1 sperm will fertilize the egg. -
week 4
Egg begins to divide. gender is specified at this time -
week 5
Amniotic fluid is building up. The embryo starts to grow. -
week 6
Embryo is about 8 mm in length. Spinal cord begining to close. -
week 7
One chamber of the heart is beating.arms and legs beging to form. -
week 8
Baby starts to move. Face is beginging to take shape. -
week 9
Fingers and toes are formed. nose and upper lip also start to form. -
week 10
Its now a fetus. muscles are being developed. -
week 11
Cartilage now calcifying to become bone. Taste buds are starting to develop. -
week 12
May be able to hear heartbeat. Fetus starts moving spontaneously. -
week 13
Baby can open and close its mouth. Starts flexing its arms and kicking its legs. -
week 14
Kidneys are producing urine. Nose is more pronounced and ears are fully developed -
week 15
Baby can now make a fist. Fingernails and toenails are now present. -
week 16
Fat begins to form underneath skin.Baby hears external voices -
week 17
Bone is becoming apparant in baby. Retina has become more sensitive to light. -
week 18
Vernix forms on baby's skin. Alveoli begin to form in lungs. -
week 19
Babys genitals are apparent now (if male). (If female) The vagina, uterus, and fallopian tubes are apparent. -
week 20
Starts feeling first fetal movements. Heart beat can now be heard. -
week 21
Small intestine starts to absorb sugars. Bone marrow has started making blood cells. -
week 22
Baby starts having a regular sleeping and waking rhythm. Taste buds are forming on baby's tongue. -
week 23
Bones in the middle of baby's ears harden. Baby can now successfully suck -
week 24
Lungs are developing branches of respiratory tree. Baby practices breathing. -
week 25
Sexual organs fully developed. Brain cells are starting to mature. -
week 26
Baby's eyes beging to open. Coordination so the baby can suck on his thumb -
week 27
Looks are almost fully developed. Retina at the back of baby's eyes are starting to develop. -
week 28
Eyes are starting to move in their sockets. Can recognize your voice. -
week 29
Can taste and respond to pain.Can now distinguish real sounds and voices. -
week 30
Baby controls its own body temperature. Skin is becoming smoother. -
week 31
Eyes react to light and darkness. A loud noise may cause baby to jump. -
week 32
Fat layer under skin is getting thicker.Baby is 17 inches long and for pounds. -
week 33
Baby practices breathing by inhaleing amniotic fluid. Half of your weight gain goes directly to your baby. -
week 34
Fat plumps up arms and legs.Baby starts uilding up immunitys to mild infections -
week 35
Babys reflexes are coordinated. Lungs are fully developed. -
week 36
May feel contractions of the womb. Baby is becoming chubby as fat layers build. -
week 37
Water could break at anytime. Baby weighs up to 7 pounds and is 19.5 inches from head to heel. -
week 38
skin is becoming completely smooth. body fat continuing to build. -
week 39
Baby has reached its final birth position. Will continue to punchand kick lower abdomen -
week 40
Contractions could begin at any moment. Blood now can travel through baby's lungs.
