Lymphedema in legs

I was diagnosed with lympedema in 2007. Due to unforseen circumstances I am now on disability so i cant stand for long periods of time without excruciating pain. I have to change so many things in my daily life but one thing that is bothering me is the pain I feel all the time .Try to do things to put in the back of my mind. My condition seems to be getting worse with the stiffness . I watch sit and fit on TV when can which helps some but the thought of not being able to walk at all has me terrified.