Hey Rosemary,
I betcha there are more than 01.% of people who can't tolerate BCG. As good a treatment as it is for high grade blc, the search is on and always has been for a less toxic treatment. This "urocidin" looks very interesting, supposedly much less toxic, in phase III trials and it works in two ways, both as immunotherapy ala` BCG and also as a chemo drug.
As for arthritic side effects, in my years listening to folks complain of them, it's true that very few end up with arthritic side effects. But you aren't the first woman I have met who has had these symptoms poo-pooed by their doctor, and there is nothing worse than having someone tell you your symptoms (make that side effects) are in your head. So in that respect your story will surely help someone who may need to recognize what is going on and is valuable.
You are certainly not alone with your reaction to BCG. Here's to never needing it again...
Wendy