R.J.
Call the doctor and tell her that the pain meds don't seem to be having effect. They will EITHER switch the med, add another med, or change the dosage.
When a person is in pain, they don't heal as quickly... pain management is something that is very serious after surgery, and they will take you concerns as such. Having been through several surgeries the docs depend on the patients, by and large, to let them know of their pain level in order to medicate correctly. When it's a child patient, they're depending on YOUR feedback. If it's not working, or is having obnoxious side effects (like nausea/vomitting) ALWAYS, ALWAYS CALL
btw... Hydrocortisone is primarily an anti-inflammatory / anti-allergy med. Did you mean Hydrocodone?