Abdominal pain 1 week before menstruation is mainly due to physiological reasons and gynecological diseases, as follows: 1, physiological pain: pelvic congestion, bruising triggered by swelling of the surrounding tissues, which involves the abdomen, inducing abdominal pain. If the pain is not too intense, belongs to the physiological pelvic congestion, also belongs to the performance of dysmenorrhea; 2, gynecological diseases: for example, it may be ovarian cysts, annexes, fallopian tubes, pelvic inflammation, or uterine fibroids, or even gynecological diseases, such as endometriosis, will also be 1 week before menstruation, causing pain in the abdomen symptoms. So when the pain in the abdomen 1 week before menstruation, if the pain is more intense or recurring, you need to go to the hospital for timely consultation to accurately diagnose the causes and foci of the pain in the abdomen.