I am suprised your Dr. tested for lyme right away......that but all NEVER happens!
I would also like to know what else your Dr said and tested for.... be interesting!
I am not saying you don't have lyme...just unusual for a doc to do that as an initial curiousity.
Sorry you are having such a tough time.
Were you tested for anything other than Lyme? The ticks often carry more than one disease, which require treatment different from Lyme. Doxy is not, in my experience as a patient, necessarily the first drug used again Lyme these days, tho that's not to say it won't work.
What kind of MD are you seeing? GP, neurologist, infectious disease, other?