Although pelvic inflammatory disease (PID) is a common complaint in young, fertile women, it is quite rare during pregnancy. Clinically it is characterized by abdominal pain, sometimes presenting as an acute abdomen with fever. Since PID has no characteristic clinical or laboratory findings, and is rare during pregnancy, it is understandable why the diagnosis is missed in most cases, and the patient is treated as an abdominal emergency. Since surgery during pregnancy in the presence of an infection leads to abortion in most cases, accurate diagnosis and appropriate treatment is of the greatest importance. A case of PID during pregnancy is presented.