Pelvic inflammatory disease (PID) is an inflammation of the uterus, fallopian tubes, ovaries and surrounding tissue. It can be caused by a variety of bacteria or viruses, including sexually transmitted infections (STIs). The bacteria most frequently responsible are Neisseria gonorrhoeae and Chlamydia trachomatis, but bacteria normally found in the vagina and cervix can also be the cause.
Although many people do not experience symptoms, the following signs are possible:
Lower abdominal pain
Increased or abnormal vaginal discharge
Pain during sexual intercourse
Bleeding between your menstrual periods or after sex
Increased menstruation
Chills or fever