Sounds like you will definitely be back on abx before too long. From what you say here, sounds like they were working!
Of course, they won't be from the ID doc, who will tell you "... there's nothing wrong with you, buck up, it's all in your head! Here, take some Prozac."
Doctors who don't see and treat Lyme patients shouldn't assume they know what they're doing with us. But professional arrogance is far too common in medicine these days. Was your LLND on the right track, do you think? Has he/she been mentored by an ILADS doc?