17-Alpha-Hydroxyprogesterone Caproate in Pregnant Women With Placenta Previa

Inclusion Criteria: * Estimated gestational age: between 24 weeks and 37 week's gestation * Confirmed Placenta previa; either major or minor degrees. * Placenta previa with preterm uterine contractions or with a history of at least single attack of mild vaginal bleeding Exclusion Criteria: * Severe attack of bleeding requiring an immediate intervention. * Fetal heart rates instability or non-reassuring tracing * Intrauterine fetal death or major fetal anomalies. * If associated with abruptio placentae * Patients with known bleeding disorders or on anticoagulant therapy * Patients with severe medical disorders