Swollen legs in pregnancy has nothing to do with whether it is a daughter or not. Swollen legs in pregnancy may be caused by physiological factors, high blood pressure during pregnancy, kidney disease and other factors. 1. Physiological factors: In late pregnancy, as the fetus grows, the uterus also grows, which may cause pressure on the inferior vena cava, blocking venous return, and physiological edema of the lower extremities may occur, which may be relieved after reasonable rest. 2. Hypertension during pregnancy: During pregnancy, when a woman suffers from hypertension during pregnancy, it is also easy to cause lower limb edema, which may be accompanied by proteinuria, dizziness, headache, nausea, vomiting and other symptoms. 3. Kidney disease: When a woman suffers from kidney disease during pregnancy, such as nephrotic syndrome or glomerulonephritis, it can lead to water and sodium retention, which will cause the symptoms of swollen legs, which may also be accompanied by proteinuria and eyelid swelling. Swelling of legs during pregnancy that lasts for a longer period of time, as well as other abnormal manifestations, is recommended to seek medical examination and treatment to avoid adverse effects.