Maybe the patients are not relating, or by post op it is gone away.
The nerves are being poked, pulled and prodded, they can be injured or damaged.

During the surgery there is often a lidocain pack placed on the area to calm down all the surgical flare. When 6 weeks goes by and you still feel like Novocain in face, there may be an injured facial nerve.

If it is not making your face droop or pain as in being nicked, it may just take another 5 weeks to calm down.
If you tolerate a steroid pack maybe the doctor will try that to calm the symptoms.
Stay off the phone on that side of the face if you can remember.

Don't be alarmed, it takes months to really recover.