Can an endometrial biopsy cause infection?

Endometrial biopsy carries a small risk of infection. The procedure involves inserting a thin tube through the cervix into the uterus to obtain a tissue sample. The risk of infection is increased if the cervix is not properly cleaned before the procedure or if the instruments used are not sterilized. Symptoms of infection after an endometrial biopsy may include fever, chills, and lower abdominal pain.