Vague pain in the left side of the abdomen with increased leucorrhea may be associated with pelvic inflammatory disease. Pelvic inflammatory diseases are a group of infectious diseases that rise to the tract in women, including endometritis, tubal inflammation, and tubal abscess. Mild inflammation can be asymptomatic or have only symptoms of lower abdominal pain and increased discharge, and in severe cases can have fever and even chills. Some patients may also have symptoms of urinary tract infection, such as urinary urgency and painful urination. To diagnose pelvic inflammatory disease, it is necessary to go to the hospital for routine blood tests to find out whether the blood picture is elevated, and then to do gynecological examinations. During gynecological examinations, you can see purulent discharge from the uterine orifice, congestion and edema of the cervix, pressure pain in the uterus, painful lifting of the cervix, and pelvic fluid when the inflammation is severe. There are also some physiological conditions that can cause vague pain in the lower abdomen and increased leucorrhea, such as ovulation pain during ovulation, which can be accompanied by increased leucorrhea in the form of straining. The exact cause of the vague pain in the lower abdomen and increased leucorrhea can be found out after a visit to the hospital.