- Biparietal diameter of foetus: 58 to 69 mm
- Weight of foetus: approx. 700 g
- Length of foetus: approx. 31 cm
The uterus now reaches at least to the height of the navel. Because it takes up so much space, it sometimes causes discomfort such as heartburn, constipation and flatulence. As with haemorrhoids, the most successful and harmless treatment is a diet rich in fibre and drinking lots of liquids - at least 1.5 to 2 litter per day!
But there are positive sides: your skin is probably clearer and smoother than ever before, your hair is thick and shinny, and your fingernails hardly ever break. However, the skin tends to discoloration and pigment abnormalities, e.g. brownish spots on the face (chloasma, the so-called pregnancy mask) and a dark vertical line running down the middle of the belly (linea nigra). Don’t worry; it will disappear almost entirely soon after birth.
One can already observe complex movement patterns in the child, e.g. reactions to loud noises and the touching of the belly. Its sense of balance is well developed and it can orient itself inside the womb and move purposefully. Its heartbeat can be heard clearly with a stethoscope. If your partner puts his ear on the right spot of your belly (where the foetal heart is closest to the abdominal wall) he may be able to hear it.