I’ve had dental surgery several times in my lifetime and it definitely left me feeling off for quite some time. I believe it was the medication to put me to sleep for surgery combined with pain medication for the first week and probably stress from the work done in my mouth…you mentioned that the pain was subsiding and that’s good but it takes time to recover completely, if you’re still feeling this way after a few weeks you should consider talking with your doctor to be sure that everything’s going well, best wishes for your recovery.