Pete, I see you joined in December. Just so you know this topic comes up a LOT! You are NOT alone.
If you use the healing well goggle search, upper right, it just searches this site only. A lot will come up.
As in previous discussions, the anxiety is most likely from: the infection itself, the herxing dieoff, antibiotics in general, , candida, not enough detox, and weak addrenals.
So you can try calming herbs(valerian and skullcap are powerfull), adrenal adaptogens, brain basied amino acids, better detox methods, Candida herbs.
Any magnessium that ends in "ate" calms you, One is even called CALM.
I've done all in my search. Detox was part of my problem- just part though. And it appears Candida returned too, so more probiotics. The initial herxing was like super anziety .
Yogi calming teas.
And nap if you can.
Lyme symptoms late 1980's, Dx'ed 2013 by LLMD. Doxy, Flagil ABX. Felt better for a while.