Pain on both sides of the abdomen during pregnancy may have different causes depending on the time of pregnancy, such as gastrointestinal discomfort during pregnancy, gynecological inflammation, and uterine traction. If there is vague pain on both sides of the abdomen before 12 weeks of pregnancy with a history of unclean diet, such as cold, greasy and spicy food, it is considered to be related to gastrointestinal inflammation. If it is accompanied by increased leucorrhea, yellowing and odor, it is considered as adnexitis and pelvic inflammatory disease. If accompanied by bleeding, ectopic pregnancy may also occur. In all these cases, timely examination at the hospital is needed to make a clear diagnosis and take treatment measures. In the middle and late stages of pregnancy, the fetus gradually increases in size and the uterus enlarges, which may cause painful pulling of the uterine ligaments and pain caused by separation of the pubic symphysis. You should pay attention to rest, avoid straining, avoid standing and sitting for a long time, and take appropriate exercise, such as walking and yoga for pregnant women. Relax and avoid excessive anxiety and tension that may affect your health and the health of the fetus. Complete pregnancy checkups regularly to monitor fetal heartbeat and fetal movement. In addition, uterine contractions can also cause vague pain on both sides of the abdomen, you need to go to the hospital in time, if you have the conditions for delivery, you can prepare for delivery, otherwise you need to suppress contractions for fetal preservation treatment.