hellokitty - No one believed me either that I had gallstones. I even had tests done to and they could not find anything. I finally convinced someone and they did surgery. My gallstones were so little they filled the whole bag. The surgeon even squeezed them out to see if there was any. And that's what he told me that they were so small that it was no wonder they didn't show up on the tests.
Fibromyalgia, Osteoarthritis, scoliosis, back problems, hypothyroidism.
My doctor explained it me this way: I asked him if the virus is what caused my fibro (since it all began that week). He said I was most likely predisposed, but virus is what brought it out.
I think that is true for a lot of people and why (including myself), I can recall minor symptoms even from childhood, but an event (i.e. car accident, surgery, virus) were the catalyst for making it full blown and active.
Not sure if that is factual, but it's how he explained it to me.