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Month 1
Size: At two weeks, the size of a pinhead
Egg attaches to the lining of the uterus
The 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 long as a month begins
Face, eyes, ears, and limbs take shape
Bones begin to form -
Month 3
Size: About 1 inch long as the 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 1 once as a month begins
Can suck its thumb, swallow hiccup, and move around
Facial features become clearer -
Month 5
Size: about 6 1/2 - 7 inches long weighs about 4-5 ounces as a month begins
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 the month begins
Fat deposits under the skin, but fetus appears wrinkled
Breathing Movements begins -
Month 7
Size: About 10-12 inches long, weighs about 1.5-2 pounds as the month begins
Has periods of activity followed by periods of rest quiet -
Month 8
Size: About 14-16 inches long, weighs about 2 1/2-3 pounds as the 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 the 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 the pelvis, ready for birth