The uterus is located in the middle of the rectum and bladder. After pregnancy, as the gestational sac continues to develop, the uterus will also increase in size, which will press on the bladder and rectum, easily leading to symptoms of frequent urination and constipation. It is more obvious at night when sleeping, and nighttime urination will increase. As soon as three months have passed, the uterus will go beyond the pelvis and can be felt above the pubic symphysis, and this phenomenon will disappear naturally. This is a physiological phenomenon that does not require treatment, and do not use drugs indiscriminately. In early pregnancy, pay attention to strengthening nutrition, eat more high-protein food to promote the development of the fetal brain, increase the body’s resistance, and eat more vegetables and fruits containing folic acid.