Endomyometritis is an "infection in the uterus". It can occur in up to 1 out of 5 women having unplanned cesarean deliveries. Antibiotics are routinely given at the time of Cesarean delivery, but the infection in the uterus can still occur. When endomyometritis occurs it can prolong the woman's stay in the hospital after birth, slow down her recovery time at home, and increase medical costs. Methergine is a medication that is routinely used to stop uterine hemorrhage (excessive bleeding from the uterus) that sometimes happens after delivery. Methergine works by contracting (tightening) the uterus. These contractions also help the uterus to expel or remove parts of the placenta that increase the chance of developing a uterine infection.

This research study is being done to learn if routine use of Methergine can lower the chances of developing a uterine infection after cesarean delivery. Half of the women in this study will receive Methergine for a few days during their hospitalization after cesarean delivery. The other half of the women will not routinely receive Methergine.

Inclusion Criteria:

1. Female singleton gravidas
2. Patients receiving non-elective cesarean deliveries after trial of labor
3. No evidence of chorioamnionitis

Exclusion Criteria:

1. Diagnosis of chorioamnionitis
2. Elective cesarean section
3. Unable to provide informed consent
4. Immunocompromised patients and those on antiretroviral drugs
5. Patients with known infection
6. Hypertension (blood pressure greater than 140/90 x 2, six hours apart), including those with a past history, gestational or Preeclampsia.
7. Allergic to ergot alkaloids. This would include people allergic to migraine medicine.

Early termination due to lack of feasibility in completing project; full analysis was not conducted;