Hello, I am a 51 year old female who has always been in good health except for depression and overweight. In the past year my feet have started giving me problems...swelling randomly on the heel, then the side, and currently on the TOP of my foot. This means I can t walk for exercise like I used to, and my weight is now 225, which is ridiculous for someone who is 5 3 . I m also having unexpected muscle weakness in my legs. My balance, never good, has become terrible and I seem to lurch from side to side. I also tire much more quickly than usual. Any thoughts about what to investigate?