This study will compare 0.1mg and 0.05mg of spinal morphine for postoperative pain after scheduled, elective Cesarean delivery. All patients will receive a spinal anesthetic (single injection in the lower back to numb patients from the waist down) for operative anesthesia and will be
randomized into one of two groups: (group 1) 0.1mg spinal morphine and (group 2) 0.05mg spinal morphine. This will be a randomized, single blinded study.