Are you seeing a neuro now? Do you trust that neuro in any way? If so, I'd call and try to see them asap. IF not, check out other area neuros and make an appt. [this usually takes 4-6 weeks for new patients, so don't delay]
If it were me, I'd say it's time for a new round of tests. Some CIDP 'variants' can be like [but not like MS] in that there can be relapses. I'd want my mind and body to know that this is something not to worry about...or whether to worry is all.
It could be nothing or something....but doing nothing and then getting worse will be harder to live with - besides it's hard to kick yourself when you get really sick! I know!
IF it is a relapse steroids and other treatments can be tried to keep things in check. I hope this issue recedes as you've got more than enough to deal with.
Keep us updated, please! 's - j