I have had it three times on the right side of my face and twice on the left, which is apparently very rare. Mine has been bought on by an allergic reaction or a cold draught.
If the have you on the anti virals and steroids you should see an improvement in a few days to a few weeks. As said it can take 3-4 months to fully recover, though you may always have some deficit.
Tape your eye shut at night or wear a patch to stop damage to your eye, rubbing your eye on your pillow as you sleep.
Take care eating that you don't bite the inside of your mouth or tongue. And drinking can cause issues with a floppy mouth.
You get used to it after a few weeks and can normally go back to work.
You should also get physio for the face, which also speeds recovery up.
There is a side effect for the steroids, they made me fat, well fatter.
Good luck and take it easy.