Is the baby fully formed after four months of pregnancy?

Patient's question:

No

Doctor's answer:

The fetus is now about 18 centimeters long and weighs about 120 grams. The skin of the fetus is becoming redder and thicker, which is beneficial for protecting the internal organs of the fetus. Fine hairs called lanugo have grown on the face. Additionally, the fetus's arms and legs can move slightly.