In the last year my legs seem very weak and when doing a lot of walking the pain in my legs and feet is excruiting. I have been diagnosed with fibromyalgia and also have chronic asthma but I am worried that I will end up in a wheelchair if I don't find some answers soon. The pain in the balls of my feet make it difficult to wear shoes except tennis shoes. I need to lose some weight but when I walk, I suffer for hours. Anyone know anything about what could be going on?