If back pain and stomach pain do not come with menstruation, first of all, we need to clarify when the symptoms appear. If the back pain and stomach pain occurred only 3-5 days ago, it can be considered as a manifestation of impending menstruation. If the back pain and stomach pain persist without menstruation, it may be combined with pregnancy, gynecological inflammation, ectopic pregnancy or other diseases, which need to be treated according to the specific cause. Specific causes and treatment 1, simple dysmenorrhea: before the onset of menstruation, due to female mental tension or endometrial secretion of prostaglandin hormone increases, uterine contraction, vascular spasm, back pain, stomach pain. Patients can relieve pain by relaxing and drinking hot brown sugar water, while avoiding cold in the lower back and abdomen and paying attention to rest. If the pain is severe, oral painkillers can be taken to relieve the symptoms; 2. Pregnancy: women of childbearing age who have recently had sex and are not menstruating can consider the possibility of pregnancy, and women who are pregnant can have pregnancy reactions such as back pain and stomach pain due to changes in hormone levels. You can test yourself with a pregnancy test or go to the hospital for a blood HCG test to diagnose whether you are pregnant. Generally this condition does not need special treatment, and the symptoms will disappear naturally after the body adapts to the hormonal changes, and pregnant women need regular maternity checkups; 3. Ectopic pregnancy: after the embryo abnormally lays in the fallopian tube jug abdomen and other parts, with the development of the embryo, local mass pressure pain is produced, and occasional or continuous lumbar abdominal pressure pain occurs, but this generally manifests as increasing pain and rapid progress. Once ectopic pregnancy is diagnosed, the pregnancy should be terminated promptly and treated to prevent infection and stop bleeding. If necessary, surgical treatment such as tubectomy and conservative surgery can be performed; 4. Gynecological inflammation: such as chronic pelvic inflammatory disease patients with hormonal disorders of body secretion, menstrual disorders, inflammation stimulating the mucous membrane of the lumbar abdomen to produce lumbar abdominal pain. Patients can go to the hospital for culture of secretions, hysteroscopy, blood tests, etc. After diagnosis, vaginal plugs, oral or intravenous infusion of antibiotics and anti-infection treatment can be performed; 5, other: kidney and ureteral stones, pyelonephritis and other urological diseases, muscle spasms caused by cold in the lumbar abdomen, lumbar abdomen muscle strains, etc. can cause lumbar abdomen pain, while combined with menstrual disorders can appear lumbar pain, stomach pain but not The combination of menstrual disorders can lead to back pain and stomach pain without menstruation. In this case, hot towels can be applied to the lower back and abdomen to relieve the pain and treat the original disease. Patients should not use medication blindly when they are not sure whether they are pregnant or not. Pay attention to keep warm and drink more hot water to avoid aggravating the pain.