Ginny,

I have had one case of Bells Palsy, as a teenager (early 1980's) (Not related to pregnancy).

I was given a LOT of facial exercises to do in front of a mirror to speed up the improvement.

I was deemed 'too young' at 13 to utilise the steroid medication, and so stayed off school for around 2 weeks and spent, literally, every minute, doing "face physio".

I am not sure if this is deemed an appropriate "cure" these days but worth asking the ENT about perhaps?