I have a diagnosis much like yours, and I have a lot of the same symptoms. My rheumy called it Mixed Connective Tissue Disease. I was positive for Lupus, Sjogren's, RA and Psoriasis. I attended a Conference on Sjogren's recently and learned a lot. If you check through the threads in Laurie's Lounge, you'll find the reports that I'm posting on the conference. I'm still not finished, so keep watching. Hopefully, they will help you.
I don't know about Canada, but here in the US, we have the right to request copies of all of our medical records. If I were you, I'd start doing that. I would even call the hospital and ask for the records from 2002. It's great that you have a running list of your symptoms. Keep doing that, and type up a list of questions for the doc as you think of them - then print them out and take them with you.
I had a mother who was very mentally ill, too. She also had many of the same symptoms that I now have. I think that she and my aunt had undiagnosed autoimmune issues and that she just couldn't understand or handle it mentally. Do you see any autoimmune symptoms in your mother? I'm very curious about the hereditary angle, since I think this has been passed down through my mother's family.
Good luck with all of this, and keep us informed.