Ectopic pregnancy! This came with a ruptured fallopian tube. When the fertilized egg implants outside the uterus, it is called an ectopic pregnancy. In this case, it was located in the fallopian tube, so this is also known as a "tubal pregnancy." The most common complication associated with a tubal pregnancy (which is seen in this case!) is rupture with internal bleeding. Bleeding can lead to hypovolemic shock and if left untreated, even death. If diagnosed early, it can be treated with methotrexate, which stops the growth of the developing embryo. This can cause an abortion, or it can be passed with a menstrual period or it can just be resorbed by the woman's body. If diagnosed later, after bleeding has already started, usually surgery is necessary. Sometimes a tiny incision can be made in the tube to just remove the products of conception, but usually the affected tube is completely removed (salpingectomy).