Prenatal Development

  • Fertalazation

    the action or process of fertilizing an egg
  • Period: to

    Parental devleopment Brooke Hingst

  • week 3

    week 3
    Your baby-in-the-making is a ball of cells called a blastocyst.
  • week 4

    week 4
    The ball of cells has officially become an embryo and is about the size of a poppy seed
  • week 5

    week 5
    Your baby's tiny heart begins to beat – at twice the rate of yours. His entire "body" is only about the size of a sesame seed.
  • Week 6

    Week 6
    Facial features (like eyes and nostrils) are beginning to form, and little buds appear where arms and legs will develop
  • Week 8

    Week 8
    Arms and legs are growing, and your baby now has little fingers, as well as a nose and upper lip.
  • Week 9

    Week 9
    Eyes have developed, though your baby's eyelids are fused shut for now. She's lost her "tail" and is starting to look more human.
  • Week 10

    Week 10
    The embryo has become a fetus. His vital organs – such as kidneys, intestines, brain, and liver – are starting to function. Tiny fingernails and toenails are forming.
  • Week 11

    Week 11
    Your baby is almost fully formed. Her bones are beginning to harden, and her genitalia are developing externally. She can hiccup, though it's too soon for you to feel it.
  • Week 12

    Week 12
    You can hear your baby's heartbeat at a prenatal checkup.(You may already have heard it at an early ultrasound.) Your baby's just over 2 inches long and weighs about half an ounce.
  • Week 14

    Week 14
    Your baby's kidneys are producing urine, and he releases it into the amniotic fluid. He can make facial expressions and may have discovered thumb-sucking.
  • Week 15

    Week 15
    Your baby can see light that filters in from outside your womb, even though her eyelids are still shut.
  • Week 16

    Week 16
    Your baby's sex may be detectable at your mid-pregnancy ultrasound, which typically happens between 16 and 20 weeks
  • 18 weeks

    18 weeks
    If you haven't felt your baby move yet, you probably will in the next few weeks. It'll take a couple of weeks longer for your partner and other people to feel your baby's movements from the outside.
  • 19 weeks

    19 weeks
    Your baby can hear your heartbeat and sounds that come from outside your body, such as your partner's voice. Your baby might even be startled by a loud noise.
  • week 20

    week 20
    Gulping down several ounces of amniotic fluid each day
  • 22 Weeks

    22 Weeks
    sleeping in cycles about 12 to 14 hours per day
  • 23 weeks

    23 weeks
    Your baby's sense of movement has developed, so he can feel the motion if you dance. His sense of hearing continues to improve.
  • Week 24

    Week 24
    Your baby's taste buds are developing. Her brain is growing very quickly, and her hair may be growing, too.
  • Week 25

    She's enjoying her new sense of equilibrium! She's growing more fat and more hair too!
  • Week 27

    Week 27
    Your baby's been doing "practice breathing" by inhaling and exhaling amniotic fluid, and if he was born now his lungs could function
  • 28 weeks

    28 weeks
    Your baby may be dreaming. She has eyelashes, and her eyesight is improving. She weighs about 2 1/4 pounds and is about 15 inches long, head to heel.
  • Week 29

    Week 29
    He's growing white fat deposits under his skin, and his energy is surging because of it.
  • Week 30

    Week 30
    brain is getting wrinklier
    skin is getting smoother
  • Week 31

    Week 31
    All five of his senses are in working order and major brain and nerve development
  • week 32

    week 32
    He's grown cute little fingernails and toenails. He's almost 17 inches long (head to heel) and weighs about 3 3/4 pounds.
  • Week 34

    Week 34
    If your baby's born now, she's considered "late preterm." Healthy babies born at this stage usually do fine, though they need some care in the neonatal intensive care unit.
  • Week 35

    Week 35
    hearing is fully developed, and he responds best to high-pitched noises
  • Week 36

    Week 36
  • Week 37

    Week 37
    Your baby is now considered full-term. His lungs should work fine if he's born now, but ideally he'll stay in your womb a bit longer.
  • week 40

    week 40
    Your baby is due and fully ready for life outside the womb. The average weight of a newborn is about 7 1/2 pounds, and the average length is about 20 inches.