David
I know you are having a bad time and I don;t have the ability to nake you better, so I'll come at this from another angle.
Are you wearing any kind of padding or have you had any advice on how to fall safely, so that if you fall there is less chance of hurting yourself. (The last thing you need is to add to your problems with a broken wrist, hip, collar bone or similar).
There are websites with tips about
falling eg:
www.fivestarseniorliving.com/resources-gravity-not-friend.phptih
But I sugegst asking an expert perhaps your PT person can advise you
All the best.
Alf