Pregnancy Timeline

  • month 1

    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 begin to form
    -the heart begins to beat
  • month 2

    Size: about 1/4 inch
    -face, eyes, ears, and limbs take shape
    -bones begin to form
  • month 3

    Size: about 1 in
    - Nostrils, mouth, lips, and eyelids form
    - buds for all 20 baby teeth appear
    - fingers and toes almost complete
    -all organs present but still immune
  • month 4

    Size: About 3 in
    -Can suck its thumb, swallow, hiccup, and move around
    -Facial features become clearer
  • month 5

    Size:About 6 1/2 - 7 in
    -Hair, eyelashes, and eyebrows appear
    -Teeth continue to grow
    - Organs are maturing
    -Becomes more active
  • month 6

    Size: about 8-10 in. about 8-12 ounces
    - Fat deposits under skin, but fetus appears wrinkled
    - breathing movements begin
  • month 7

    Size: about 10-12 in. 1 1/2-2 pounds
    -Has periods of activity followed by periods of rest and quiet
  • month 8

    Size: About 14-16 in. About 2 1/2- 3 pounds
    -Rapid weight gain continues
    -May react to loud noises with a reflex jerking action
    -Moves into a head-down position
  • month 9

    Size: About 17-18 in. About 5-6 pounds
    -Weight gain continues
    -Skin becomes smooth as fat deposits continue
    -Movement decrease as the fetus has less room to move
    -Acquires disease-fighting antibodies from the mother's blood
    -Descends into pelvis, ready for birth