1. What is the size of the fetus at 7 months of pregnancy? The size of a fetus at 7 months of pregnancy is about 30 centimeters and the weight is about 1.2 kilograms. At this time, the fetus has basically taken shape, and the proportions of the head and body are gradually approaching those of a normal newborn. 2. Fetal development at 7 months of pregnancy 1. Nerves: At this time, the fetal nerves have been fully developed and can maintain its own body temperature and breathe. 2. Breathing: At this stage, the fetal lungs have begun to secrete surface