Endometritis is inflammation of the lining of the uterus that usually occurs as a complication of an infection. Signs of endometritis include fever, lower abdominal pain, and bleeding between menstrual periods.

Endometritis can be caused by an infection in a woman’s uterus related to childbirth or by an infection that spreads from another part of the body, such as the vagina.

Treatment with antibiotics usually clears up the infection and inflammation within a few days. Without treatment, the infection can spread to the bloodstream and can cause serious illness.