After a surgical procedure, then patient stays in a recovery room, under monitoring. For how long? It depends on how long was the surgery, if the procedure was done with general anesthesia, or spinal anesthesia, if the volume of fat removed was small or large, if the vital signs of the patient are normal, if the patient does not have any active bleeding, or postoperative vomit, if the patient is fully awake and not too much pain, etc. In your case also will be important to check your glucose levels to check that you are with hypoglycemia or hyperglycemia to assure you will be ok to go back home. Discuss these situations with your surgeon and get all the answers for your questions.