A small abdominal bulge at 16 weeks of gestation is normal and is the outline of an enlarged uterus. It is recommended to rest in the lateral position and not to stimulate the abdomen frequently with your hands or your breasts, which can reduce the spontaneous contractions of the uterus. pregnant women under 35 years old with no adverse maternal history need to be screened for Down’s syndrome at 15-20 weeks. Some pregnant women can feel the fetal movement at 16 weeks, most will feel it around 18 weeks, the more weeks of pregnancy, the more obvious the fetal movement. During this period, you also need to pay attention to your diet to ensure a balanced diet, with a reasonable mix of meat, vegetables, fruits, eggs and milk, seafood and cereal grains. Ensure adequate nutrition and normal growth and development of the fetus. Pay attention to rest, do not engage in heavy physical activities, but need to be properly active to control weight gain and reduce the chance of pregnancy complications, which will help natural delivery.