1. Physical changes of pregnant women at 17 weeks of pregnancy. At 17 weeks of pregnancy, the baby has developed to the stage where the fingers and toes have nails. At this time, the pregnant woman\’s vagina has expanded above the umbilicus, and the abdomen has gradually begun to bulge. At the same time, pregnant women may feel fetal movement, which is a manifestation of the baby\’s internal movements. 2. Nutritional needs during pregnancy During pregnancy, the mother’s body needs to provide adequate nutrition for the fetus. In addition to common nutrients such as protein, carbohydrates, and fats, special attention should be paid to folic acid, iron, calcium, etc.