Very interesting, your response to the minocycline. Thinking about it, I have felt slightly 'light-headed' for the last year, with my doxycycline/rifampicin and roxithromycin regime. Only when I am standing or moving, though.
The flu like symptoms followed by the cough are spot on for the Herxheimer reaction which shows evidence of infection. If you look through my chlamydia pneumoniae postings and read the links I give to David's papers, you will find out more about this. I will keep my fingers crossed. Of course, you can't say that you were not just getting a cold: most people will, despite the lack of sore throat or sneezing.
As for the back pain going, I showed your email to David, who is treating a man in his forties with PPMS and he is experiencing something similar, despite the fact that the generally accepted view is that someone with PPMS can't be helped with anything. David saw him for the second time last week and he was walking in a much easier fashion. So am I, come to that, although I have never had back ache or anything like that. I can stand on one leg again though, right and left! I guess that chiropractors don't know much about antibiotics and yours would prefer to think that it is his treatment which has stopped the pain. Hopefully it will continue, anyway.
I think acidophilus would be a good idea with long term antibiotics, and of course, the essential vit. d and b12.
Keep up the good work!