Lyme disease, experience?

Hello,

I've had muscle pain (of varying location and intensity) since October last year, which has gotten worse and worse, and I also feel unfit.

At the end of January, I was diagnosed with Lyme disease (IgM and OspC positive). I've been taking doxycycline for 17 days. The symptoms haven't really improved (if only minimally). Does anyone here have experience with early disseminated Lyme disease, and how long did it take for you to get better?

Thanks and best regards