Pregnancy and Prenatal Development

  • Month 9 baby

    Size: About 17-18 inches (43-46 cm) long, 5-6 pounds (2.3-2.7 kg) as month begins.
    Weight gain countines until the week before birth.
    Skin cecomes smooth as fat deposits continue.
    Movements decrease as the fetus has less room to move around.
    Acquires disease-fighting antibodies from the mothers blood.
    Descends into pelvis, ready for birth,
  • Month 1 baby

    Size: at two weeks, the size of a pin head.
    Egg attaches to lining of uterus.
    Critical stage for brain and spinal cord development.
    Internal organs and circulatory system.
    The heart begins to beat.
  • Month 2 baby

    Size: about 1/4 inch (6mm) long as month begins.
    Face, eyes, ears, and limbs take shape.
    Bones being to form.
  • Month 3 baby

    Size: about 1 inch (25 mm) long as month begins.
    Nostrils, mouth, lips, teeth buds, and eyelids form.
    Fingers and toes, almost complete.
    All organs present, although immature.
  • Month 4 baby

    Size: about 3 inch (7.6 mm) long, 1 ounce (28 g) as month begins.
    Can suck its thumb, swallow, hiccup, and move around.
    Facial feature become clearer.
  • Month 5 baby

    Size: about 6 1/2-7 inches (16-18 cm) long, about 4-5 ounces (113-142 g) as month begins.
    Hair, eyelashes, and eyebrows appear.
    Teeth contuines to develop.
    Organs are maturing.
    Becomes more active.
  • Month 6 baby

    Size: About 8-10 inches (21-25 cm) long, about 8-12 ounces (227-340 g)
    Fat depostits under skin, but fetus appears wrinkled.
    Breathing movements begin.
  • Month 7 baby

    Size: About 10-12 inches (25-31 cm) long, about 1 1/2-2 pounds (680-907 g) as month begins.
    Periods of activity followed by periods of rest and quiet.
  • Month 8 baby

    Size: About 14-16 inches (36-41 cm) long, about 2 1/2-3 pounds (1.0- 1.4 kg) as month begins.
    Weigh gain continues rapidly.
    May react to loud noises with a reflex jerking action.
    Moves into a head-down position.