I also had convinced myself it was MS, and with 3 negative Lyme tests, I was convinced it WASN'T Lyme. Until it seemed the universe decided to smack me in the face and had me meet 5 - 6 people with Lyme within about
3 months who all had pretty much the exact same story I did. That was when I decided to find an LLMD / LLND and get properly evaluated.
I was seeing EL when I was there. She's super nice, even has Lyme herself, but she couldn't help me. Now I go to a Klinghardt trained ND in San Rafael. I've been going for close to 2 years now, and have definitely made improvements. They're small, but noticeable (over time). I love them. If you want more info, hit me up with an email (click my profile) and I'll send you a link to their website.
I hope you can get results with your current practitioner; I think Santa Rosa is closer to Grass Valley than San Rafael.