It's a good question, Jane, but, personally, I would not (do not) want to know until I am quite literally on my last legs and about to shuffle off. Nor would I want to be the person imbued with the knowledge of how long someone else will live.
The bold, brave and beautiful can be struck down without warning; the cranky, cowardly and decripit can trundle along for years. And years. And years. It's the greatest mystery of life.
The advice the other ladies are giving you is sound--you will have to wait and see and take advantage of the treatments that are offered if you find them acceptable. And hope. And accept virtual cuddles. :)
Sometimes I think that if it wasn't for bad luck, I'd have no luck at all. Then I have to remind myself that I live in one of the luckiest countries in the world with (generally) amazing health care and high standards of living. If I'd been born pretty much anywhere else this disease would have killed me years ago. Good luck, Jane. Marg xxxxx