Ruptured ectopic pregnancy is the leading cause of first trimester maternal mortality. The diagnosis of ectopic pregnancy should always be suspected in patients with abdominal pain, vaginal bleeding or syncope. While the use of an intrauterine device (IUD) markedly reduces the incidence of intrauterine pregnancy, it does not confer equal protection from the risk of ectopic pregnancy. In this report we discuss the case of a female patient who presented with a ruptured ectopic pregnancy and hemoperitoneum despite a correctly positioned IUD.