If you have swollen legs and feet in the fifth month of pregnancy, you should exclude some diseases that cause this phenomenon, check your blood pressure, blood sugar and urine protein, if the values are within the normal range and there is no abnormal discomfort, no special treatment is needed, it is a normal performance. Because after pregnancy, the enlarged fetus presses on the inferior vena cava, resulting in obstruction of blood circulation and swollen legs and feet. If the blood pressure increases during pregnancy, it will lead to swollen legs and feet. If the blood pressure increases, it is necessary to check the urine routine in time to exclude the swelling caused by the kidneys.