Hi Bex, yes I was thinking of you when I mentioned "something must have got at me." Because it seems that's what's happened to you. I'm a bit skeptical about candida because of the lack of obvious symptoms, though I will try a treatment regime. If that makes no difference, then what? How do I try to find out what could be challenging my immune system? Nothing happened to me that year that I could link to an infection. The only dental work I got was the fillings. EBV? This is where I start feeling frightened that the illness could go on for years and just be one of those mysterious things.

Thanks for your input here. I hope I'll be able to say at some point that I've found the answer to this.