What is happening during Week 23

The baby now weighs almost 1 lb (450g) and measures about 8 inches (20cm) from crown to rump.

She is becoming plumper as her fat is being laid down at a high rate, but her skin is still wrinkled and reddish. The wrinkled and loose appearance of her skin is due to the faster production of her skin than the fat that fills it out. The reddish appearance of her skin is due to the deposition of pigment as her skin loses its translucent appearance.

The baby can kick and punch vigorously by now, but she may also be gently feeling the umbilical cord and rubbing her hands and face against the inside membrane of the amniotic sac that holds her.

She is still swallowing amniotic fluid (which provides an important nutritional supplement to the nutrition she gets via the placenta) and is passing some of it as urine. The swallowing of the amniotic fluid may cause the baby to get the hiccups and you may even be able to feel this as her body jumps.

The lanugo hair on the baby's body may turn darker at this time.