Fetal size: After more than three months of pregnancy, the fetus has grown to the size of a small tomato. The fetus at this time is about 9.4 cm long and weighs about 40 grams. The fetus begins to have outlines and limbs. The head is longer than the body, and the shape of the hands and feet is more obvious. At this time, the fetus is not fully developed, but the basic shape has been formed. Medically, this period is called the embryonic period, which is the initial stage of fetal development. At this time, the fetus needs adequate nutrition from the mother, so pregnant women need