Development of Fetus at 33 Weeks

At 33 weeks pregnant, you're probably uncomfortable and getting impatient for the big day. You may be ready for your baby, but she is not quite ready to face the world yet.

  1. Size

    • At 33 weeks, a fetus weighs approximately 4 pounds and is about 18.4 inches long from head to foot.

    Movement

    • The fetus is moving around a lot, and you may be able to distinguish a kick from a punch.

    Autonomic Nervous System

    • At this stage, a fetus's pupils respond to light (or would, if he were born), and he makes breathing motions.

    Appearance

    • The fetus is gaining weight, and her skin is becoming less red and wrinkled.

    Premature Birth

    • Babies born at 33 weeks are usually viable (98 percent survive) but will need care in the NICU. According to the March of Dimes, "Babies born at this time are less likely than babies born earlier to develop serious disabilities caused by premature birth, though they remain at increased risk for learning and behavioral problems."

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