9 st week of pregnancy: the embryo becomes a foetus

Your embryo, now called a foetus, weighs almost 8 grams and measures about 50 millimetres, or 5 centimetres. Important steps take place at this stage of the pregnancy: the development of the genitals into a penis or labia majora, the formation of red blood cells in the liver, or the appearance of small buds, which will become your child's future teeth. The foetus can now swallow amniotic fluid. This mechanism, called swallowing, will be very important throughout the pregnancy as it helps to regenerate the amniotic fluid.