The hidden pain on the left side of the stomach at 24 weeks of pregnancy may be caused by the enlargement of the uterus, or it may be caused by false contractions, miscarriage or other diseases. 1. uterine enlargement: normal pregnancy to 24 weeks, considered to be the middle of pregnancy, at this time as the uterus continues to grow, some pregnant women with sensitive body, may appear on the left side of the stomach hidden pain, is a normal physiological phenomenon. 2. Pseudocontractions: It is considered to be related to lifting heavy objects, keeping the same position for a long time, falling, bumping, excessive mental stress and other factors, which will enhance the sensitivity of the uterine myometrium, and then irregular contractions will appear, which can be manifested as a vague pain on the left side of the stomach. 3. Pre-eclampsia: The occurrence of this disease is related to uterine malformation, cervical laceration, strong stress stimulation, excessive smoking or alcoholism, abnormal immune function, excessive exposure to radioactivity and other factors, therefore, 24 weeks pregnant with vague pain on the left side of the stomach need to be suspected of may be pre-eclampsia. In addition, you also need to consider the possibility of ulcerative colitis, gastritis, gastroduodenal ulcer and other diseases. If the left side of the stomach at 24 weeks of pregnancy is excluded from the physiological phenomenon, you should go to the hospital in time for examination, to clarify the cause of the disease, and then follow the doctor’s instructions for treatment, so as to avoid delay in treatment.