Primary ovarian ectopic pregnancy, is one of the rarest forms of ectopic pregnancy. Ovarian ectopic pregnancy may occur with or without the essence of any of the classical risk factors or signs and symptoms. The diagnosis is made often at surgery and required histologic confirmation. This is a case of a primary ovarian pregnancy in a 36-year old elderly primigravida who presented with abdominal pain and subsequently underwent ovarian wedge resection. Diagnosis of ovarian pregnancy was later confirmed using the Spiegelberg criteria. This paper presents a review of literature regarding ovarian pregnancy's clinical presentation, risk factors, and the possibility of a conservative management.