We present a rare case of ovarian torsion at the end of the second trimester of pregnancy in a polycystic patient treated with clomiphene citrate. A 29-year-old pregnant women in the 24th week of twin gestation was admitted to our clinic with acute onset of lower colic abdominal pain, nausea and vomiting. She had conceived fallowing an ovulation induction with clomiphen citrate for polycystic ovarian syndrome. With a presumptive diagnosis of left adnexal torsion, surgery was performed via a left paramedian incision. On surgical exploration the left ovary was ischemic and edematous and its pedicle was seen to be twisted around itself three times. Although as being very congested, it rapidly reperfused following untwisting and was conserved. The management of these cases should be as conservative as possible and paramedian incision can be a prompt choice in unilateral cases.