As the fetus continues to grow in the second trimester, the uterine wall will also expand and enlarge, at which time there will be pressure on the surrounding tissues and organs outside the uterus, which will lead to abdominal pain. For example, in late pregnancy, the uterine cavity may press on the intestines and cause poor bowel movements, or even constipation, resulting in abdominal pain, and pressure on the bladder may cause frequent urination. Furthermore, as the fetus continues to develop, it will cause irregular uterine contractions after moving around in the uterus, thus causing abdominal pain and discomfort. It is recommended that regular meals and regular rest should be taken during pregnancy, while reducing the stimulation to the fetus. The abdominal pain also needs to be alerted to the possibility of preterm labor, and if necessary, hospital consultation is recommended.