Baby: Week 15
You will enter a new weight class soon, as body fat is developing.
You’re nearly 11cm long from crown to rump and weigh about 140g, with a mostly rubbery cartilage skeleton and a few bones. Your protective myelin sheath is covering the spinal cord.
Now that you’re kickboxing and playing, you can work up a sweat, since sweat glands are developing all over your body. Your heart beats about 140-150 beats per minute, about twice as fast as your mother’s.
You will enter a new weight class soon, as body fat is developing. The fat will provide energy and help keep you warm after birth.
BabyCentre discusses week 17 of pregnancyfind out more
Langmans Medical Embryology, Ninth Edition, TW Sadler, 2003find out more
Mayo Clinic discusses week 13 in pregnancyfind out more