The fetus can even suck its thumb, yawn, stretch and make faces.
Week 13: Vocal cords form and fetus’s large head begins to grow proportionate to its body.
Week 14: The fetus’s skin starts to thicken and fine hair begins to grow.
- Hair, eyelids, eyelashes, and nails become well developed.
- The heartbeat is now clearly audible through a Doppler instrument.
- The teeth become denser, and the baby begins to stretch, yawn and make other movements.
- The reproductive organs are now visible on an ultrasound.