If you have regular menstruation and do not have your period at the time it should appear, and you also have vague pain in your abdomen, you should first suspect that your period is delayed, and vague pain in your abdomen is a symptom before your period arrives. Secondly, if there is a history of sexual intercourse, pregnancy should also be considered. In addition, some gynecological diseases that cause abdominal pain should also be taken seriously: 1. delayed menstruation: vague pain in the abdomen may be caused by pelvic congestion that occurs before the arrival of menstruation, which generally does not require special treatment. If the delayed menstruation occurs for a long time thereafter, it is recommended that the patient undergoes Chinese medical treatment, such as taking Siwu Tang, Sijunzi Tang, Chaihu Shuhe Ban, etc., but do not take medication on your own. In daily life, attention should also be paid to avoid cold abdomen or cold food, such as ice-cream, cold drinks, etc.; 2. Pregnancy: If there is sexual life recently, the possibility of pregnancy needs to be considered, you can first make a preliminary judgment through a pregnancy test, if there are two bars, you can then go to the hospital for relevant tests to clarify whether you are pregnant. In addition, for patients who have been pregnant for a period of time, it is also necessary to clarify whether the hidden pain in the abdomen is caused by early signs of miscarriage or ectopic pregnancy. If it is a sign of early miscarriage, you should follow the doctor’s instructions, take progesterone and other fetus-preserving drugs, and review the embryonic condition regularly. In the case of ectopic pregnancy, you need to suppress the growth of the embryo under the guidance of your doctor and choose the right time to stop the pregnancy. However, regardless of the above-mentioned cases, you should avoid sexual life and vigorous exercise in the short term. 3. Gynecological diseases: Common gynecological diseases such as pelvic inflammatory disease, cervicitis and adnexitis may affect the normal menstrual cycle and cause vague pain in the abdomen. In addition, if there is abnormal vaginal discharge, such as purulent discharge, it is suspected that the symptoms of infection may occur. Treatment is mostly based on antibiotic therapy, such as azithromycin and doxycycline. During the treatment period, sexual intercourse should be avoided, light diet and nutrition should be enhanced.