How Big Is Your Baby at 12 Weeks in the Womb?

At 12 weeks gestation, a fetus is about the size of a small fruit and is beginning to look more like a human. Its face is well formed. Its eyes are in the front of the head and its ears are on the sides.

  1. Size

    • The baby has grown to 2 ½ inches in length and weighs about ½ oz.

    Movement

    • A baby can move at this stage and if a mother pushes on her stomach, the baby will react. However, the mother would not feel the baby move. At 12 weeks, a baby's mouth will begin making a sucking action.

    Limbs

    • The arms and legs are formed and are long and slender at this stage. A fetus can make a fist with its fingers.

    Organs

    • Nerve cells and synapses are forming in the brain. The kidneys will expel urine into the bladder.

    Fun Fact

    • At this point, the head of the baby makes up half of its size. The tooth buds become visible and will become the baby teeth.

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