Hidden pain in the stomach during the 11th week of pregnancy may be due to physiological factors, or it may be a symptom of certain diseases, such as gastrointestinal diseases, preeclampsia, ectopic pregnancy, pelvic inflammatory disease, etc., and you should consult a doctor in time to find out the cause of the disease. 1. Physiological factors: mainly after pregnancy, due to the enlargement of the uterus, the ligaments of the uterus are pulled, thus causing pain, the pain can be on one side or both sides, usually when walking or position change, the pain will be more obvious, and can be improved after resting. 2. Pathologic factors: (1) gastrointestinal disorders: after pregnancy, pregnant women’s intestines and stomach become sensitive, easy to cold, improper diet, unclean food and other reasons for digestive disorders, which leads to gastrointestinal spasms, and at this time there will be hidden pain in the stomach. (2) Pre-eclampsia, ectopic pregnancy: If the symptoms of vague pain in the stomach are mild or gradually aggravating pain in the lower abdomen, or paroxysmal, hidden, then the patient needs to consider the possibility of pre-eclampsia or ectopic pregnancy. (3) Pelvic inflammatory disease: pregnant women suffering from pelvic inflammatory disease can be in the 11th week of pregnancy due to inflammation stimulation of the pelvic cavity, resulting in tissue congestion, edema, and then stimulate the abdominal wall nerves caused by vague pain in the stomach. It is recommended that if physiological causes are ruled out, timely consultation should be made with the doctor to clarify the cause of the disease and give targeted treatment.