Sorry to hear of this development!
I agree with Traveler about
giving the herbs another try.
In his latest book, "Freedom from Lyme Disease....", Bryan Rosner mentions that previously ineffective treatments can prove quite effective if attempted at a later date.
In the event you might find the info useful, here's a link to Buhner's various c-diff protocols:
buhnerhealinglyme.com/co-infections/c-difficile-and-herbs-for-lyme/Hope you feel better soon!