Oxytocin to Decrease Blood Loss During Cesarean Section

The goal of this study is to determine the best dose of a drug called oxytocin, that is usually used to stop bleeding during a delivery, when used during a cesarean delivery. It will be administered during cesarean section in order to decrease the amount blood loss. The investigators are proposing to have 3 groups of subjects each given a different safe dose of oxytocin and then to assess the effectiveness of each regimens on the amount blood lost during cesarean sections.This will let use know which is the best lowest dose needed.