1. Fetal Development The diagram of a female fetus at seven months of pregnancy shows the development of the fetus at this stage. At this time, the fetus is very mature and all the organs of the body have been formed. They only need to continue to grow and develop. At this time, the length of the fetus is about 36 cm and the weight is about 1.5 kg. 2. Things to note during pregnancy: Pregnancy