Superior Hypogastric Nerve Plexus Block With Bupivacaine After Robotic Resection of Endometriosis

10cc of 0.25% Bupivacaine Hydrochloride will be injected into the peritoneum overlying the superior hypogastric nerve plexus with a laparoscopic needle during robotic surgery

10cc of 0.9% normal saline will be injected into the peritoneum overlying the superior hypogastric nerve plexus with a laparoscopic needle during robotic surgery