100,000 nerve cells per minute During this week, your baby will triple its size. The head is even more distinctive, and the brain is growing quickly to fill the enlarging head. Every minute about 100,000 nerve cells form. There’s also the beginning of the eyes, the outline of the ears, a bump for the mouth and maybe signs of a nose. The development is intensive. There is continuous work on the digestive and respiratory system. Illustration by Karoline Lenhult
You can expect to feel tired; it’s a sign that your metabolism is adapting to your pregnancy. In addition to that, the production of oestrogen and progesterone, hormones that are important for pregnancy, have started to increase. Progesterone in particular can make you feel a bit sleepy. It's usually worth doing something about feeling tired - all you have to do is have more sleep than usual. Console yourself with the fact it's only temporary. Go and make yourself comfy on the sofa in front of the TV and try to grab a nap now and then. It will soon pass; so don't be too hard on yourself - just take it easy for a while.