Women of childbearing age who are not using a method of contraception and whose period is delayed for 2 days must take an early pregnancy test to see if they are pregnant. Some pregnancies are associated with miscarriage with aura, which can result in a vague pain in the stomach. Positive pregnancy test paper and vague pain in the stomach cannot exclude the case of pre-miscarriage. You can go to the hospital to have blood drawn for blood HCG and progesterone, if the blood HCG value is good and the progesterone gradually rises, it means that the problem is not big. If you are pregnant and have vague pain in your stomach, you can treat the symptoms with birth control pills. If the test is not pregnant, but the stomach aches after 2 days of delayed menstruation, is it time for menstruation? Some people may experience abdominal discomfort before menstruation, so you can take motherwort granules for symptomatic treatment. If the delay of 2 days is not due to menstruation, but due to the hidden pain caused by pelvic inflammation, the diagnosis can be clarified by ultrasound. If there is a large amount of fluid in the pelvis and stomach pain, consider pelvic inflammation, take medicines that activate blood circulation and remove blood stasis to treat pelvic inflammation, such as women’s inflammation kang, gynecological thousand gold tablets to regulate the symptoms. Therefore, if you have delayed menstruation for 2 days and have a vague pain in the stomach, you must do the appropriate examination to see what the situation is and then treat the symptoms.