Hyperreactio luteinalis is a rare condition characterized by the presence of bilateral theca lutein cysts, which occur rarely in a singleton normal pregnancy. Bilateral multicystic ovarian enlargement occurs due to elevated beta-human chorionic gonadotropin. We present a rare case of a 23-year-old primigravida in her tenth week of gestation, presenting with an acute abdomen, with increasing abdominal girth, diagnosed with a rupture of theca lutein cyst, and posted for laparotomy. Theca lutein cyst doesn't affect the course of pregnancy and has a spontaneous regression after delivery. Our case is different due to the occurrence of cysts in a singleton pregnancy and the rupture of these cysts during pregnancy. Unless complicated by torsion, rupture, or hemorrhage, most theca lutein cysts are managed conservatively.