Baby Timeline

  • 1st Month Pregnant

    A pin head is about the size of the baby
    Egg attaches to lining of uterus
    Critical stage for brain and spinal cord development
    Internal organs and circulatory system begins to form
    Heart begins to beat
  • 2nd Month Pregnant

    Baby is about 1/4 in. (6 mm) long as month begins.
    Face, eyes, ears, limbs, and bones begin to take shape and form
  • 3rd Month Pregnant

    About 1 in (25 mm) log as month begins
    Nostrils, mouth, lips, eyelids form
    Buds for 20 baby teeth appear
    Fingers and toes are almost complete
    All organs are present but still immature
  • 4th Month Pregnant

    About 3 in (7.6 cm) long, weighs 1 ounce (28 g) as month begins
    Can suck thumb, swallow, hiccup, move around
    Facial features become clear.
  • 5th Month of Birth

    About 6 1/2- 7 in (16-18 cm) long, weighs about 4-5 ounces (113-142 g) as month begins
    Hair, eyelashes, and eyebrows appear
    Teeth continue to develop
    Organs are maturing
    Becomes more active
  • 6th Month Pregnant

    About 8-10 in (21-25 cm) long, weighs about 8-12 ounces (227-340 g) as month begins
    Fat deposits under skin, but fetus appears wrinkled
    Breathing movements begin
  • 7th Month Pregnant

    About 10-12 in (25-31 cm) long, weighs about 1 1/2-2 pounds (680-907 g) as month begins
    Has periods of activity followed by periods of rest and quiet
  • 8th Month Pregnant

    About 14-16 in (36-41 cm) long, weighs about 2 1/2-3 pounds (1.0-1.4 kg) as month begins
    Rapid weight gain continues
    May react to loud noises with a reflex jerking action
    Moves into a head-down position
  • 9th Month Pregnant

    About 17-18 in (43-46 cm) long, weighs about 5-6 pounds (2.3-2.7 kg) as month begins
    Weight gain continues
    Skin becomes smooth as fat deposits continue
    Movements decrease as the fetus has less room to move around
    Acquires disease-fighting antibodies from the mother's blood
    Descends into pelvis, ready for birth