Aww, Sally......I know it's a scary thought to have to possibly leave your home. I'm sorry you're having to think about it.
Here's the first thing I thought of.....why not see if you can find a housemate? Someone that possibly has MS and needs (and wants) to be around someone else but who can also help you with your needs? The NMSS might have a program that matches people up.
My Dad did a similar thing before he became ill - but it was sort of reversed. He had a friend who needed somewhere to live, my Mom was in a nursing home so he had the extra room and loved having the company. It worked well for about three years. His friend cooked and cleaned and got her room and board free. She was a widow who had some health problems but nothing that kept her from doing the things he needed.....she was on SSI and her meds cost just about what she received in her check. So it worked out well for both of them. Once his heart problems got more serious we had to think about alternate solutions.
Maybe a similar situation would work for you?