Your baby is about 6cm long – about the size of a plum – and weighs about 18g. The fetus has almost doubled in size in the past 4 weeks and is now fully formed, with all of the organs, muscles, limbs and bones in place. At this point, your baby fills your whole uterus.
The head is about half the length of the body. The arms appear a more normal length, although the legs are still short. The kidneys are functioning, and the baby is swallowing amniotic fluid and passing urine. They are practising breathing movements and their digestive system is starting to practise too.
The baby is moving around constantly – stretching, yawning and wriggling. The heart is beating strongly and can be heard with a heart monitor.
Any morning sickness should be easing up now and your uterus will have shifted so there is less pressure on your bladder. You should also be feeling less tired and you might even have more energy.
Some women notice dark patches on their face or neck, called ‘chloasma’. You may also develop a dark line from your belly button down to your pubic area, called the linea nigra. These are both caused by the hormonal changes going on in your body.