Pelvic inflammatory disease may have pain in the lower abdomen and often worsens after sexual intercourse, activity, and also systemic symptoms such as headache. 1. Lower abdominal pain. It is the main symptom of pelvic inflammatory disease, usually persistent pain, often aggravated after sexual intercourse and activities, and may also have symptoms such as increased vaginal discharge, odor, and abnormal vaginal bleeding during or after sexual intercourse or between menstrual cycles. 2. Headache. When the condition of pelvic inflammatory disease is serious, headache may appear, and may be accompanied by chills, high fever and other symptoms. If pelvic inflammatory disease is serious, it can also involve the urinary system, and symptoms such as frequent urination and painful urination can occur. When symptoms of pelvic inflammatory disease are suspected, the cause of the disease should be clarified under the guidance of the doctor and actively treated.