Hi S.,
I had this at 6 weeks postpartum almost 6 years ago. I never fully recovered (most people do recover fully so don't be too concerned). I was told I couldn't take the steroid because I was breastfeeding. I either had to quit nursing for two weeks, or not take the steroid. My son had a terrible time getting a good latch up until about a week before me getting Bells Palsy. I knew if I gave him a bottle for even two weeks, I'd not be able to nurse him anymore. So I opted for acupuncture and electrostimulation on my face. Maybe we did to much too quickly, I don't know - but my recovery was long, slow and painful. I do hope by now, you are already seeing improvements, and all is well with you and your pregnancy!
Women who are pregnant and in the postpartum period are 5% more likely to get Bells Palsy then the 'average' person. I'm thinking it has to do with the swelling :-) Good luck!
T.