When you say your western blot was negative, what does that mean exactly? Did you have any bands show up?
I'm trying to navigate these waters myself at the moment. I'm in a similar boat as you, sick for nearly 5 years, and bedridden for the last 1.5, and declining rapidly the last couple months. My symptoms are different than yours but some similar.
I finally found a local naturopath who was willing to do a house call. She is a LLND. We had the intention of her drawing alot of blood to do all the various infectious and immune system tests (I've had all the "regular" stuff tested and ruled out over the years), but my autonomic nervous system is so screwed up she could only get a couple of mLs of blood before my vein spasmed out and I started crashing. Decided just to do the igenex western blot, and in the meantime she started me on a low dose of antibiotics to see how I'd respond.
Well, in the several weeks I've been on antibiotics, I've already seen improvements in my symptoms and just generally feel better. I haven't increased my function a whole lot yet, but just feeling better has given me alot of hope. My western blot results came back and I had 3 IgM bands positive, and 2 IgG bands positive. As far as i can tell, this simply means i have antibodies to certain bacterial proteins, and one of the bands i have is specific to Borrelia, so i must have been exposed at some point and am still making antibodies. I'm considered "negative" according to both Igenex and CDC for Lyme, but since it is a clinical diagnosis, I'm sure there are plenty of LLMDs that would say I have Lyme disease.
The one thing I'm sure of, is that antibiotics have measurably improved my symptoms, so I'm sure that i have some sort of bacterial infection (and I'm on amoxicillin, so i don't think it's just an immunomodulatory effect).
This is meant for your other thread, but I'll just post it here.... Another option besides travelling to Dr DeMeirleir, if you have a local doctor that is somewhat open-minded, is to do a Skype call with Dr. Enlander, which was what I originally intended to do. You can email Dr. Enlander's office and say you are interested in a Skype consultation, and they will send you a list of tests to have done. Your local doctor orders the blood work (and hopefully your insurance will cover alot of it-- some of it is Lyme coinfections). Then once you get your results, Dr Enlander will Skype with you and give you his suggestions and treatment recommendations, and he will consult with your local doctor.
But if you are really on a budget, I would talk to your doctor about at least trialing some antibiotics just to see if you see a difference. Knowing if you have co-infections can make a difference for treatment though, but I'm not positive you need to go through igenex for that... I think fry labs does them too? It might be worth researching further to see if there is a way to get insurance to cover it.