Fifteen weeks pregnant belly size and uterus, whether obese, the bottom of the uterus can reach the umbilical cord between the shame, the general abdominal bulge is not obvious, but obese people belly can have bulge. After pregnancy, the uterus will increase with the increase in pregnancy weeks and gradually increase in pregnancy fifteen weeks when the bottom of the uterus can be between the umbilical cord and shame, the height of the bottom of the uterus is about 15cm or so, the general pregnant women’s stomach is not very obvious, but there will be individual differences, obese people may have obvious abdominal expansion. Fifteen weeks pregnant is already in the middle of pregnancy, at this time into the rapid growth of the fetus, the need to adjust a reasonable diet under the guidance of the doctor, the need to increase the protein, iron, calcium and vitamins and other nutrients such as food, such as dairy products, meat, eggs, fowls, fresh fruits and vegetables, but also a moderate amount of exercise, to prevent excessively rapid weight gain.