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Month 1
Size: At 2 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
Heart begins to beat -
Month 2
Size: about 1/4 inch (6mm) long as month begins
Face, eyes, and limbs take shape
Bones begin to form -
Month 3
Size: About 1 inch long as month begins
Nostrils, mouth, lips and eyelids form
Buds for all 20 baby teeth appear
Fingers and toes almost complete
All organs present but still immature -
Month 4
Size: About 3 inches long
Weighs about 1 ounce
Can suck its thumb, swallow, hiccup, and move around
Facial features become clearer -
Month 5
Size: About 3 inches longs
Weighs about 4-5 ounces as month beings
Hair, eyelashes and eyebrows appear
Teeth continue to develop
Organs are maturing
Becomes more active -
Month 6
Size: About 8-10 inches long
Weighs about 8-12 ounces as month begins
Fat deposits under skin, bit fetus appears wrinkled
Breathing movements begin -
Month 7
Size: About 10-12 inches long
Weighs about 1.5 to 2 pounds as month begins
Has periods of activity followed by periods of rest and quiet -
Month 8
Size: About 14-16 long
Weighs about 2.5 to 3 pounds as month begins
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 inches long
Weighs about 5-6 pounds 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
