I have been taking 100mg of Topamax daily for 9 months now. At f...

I have been taking 100mg of Topamax daily for 9 months now. At first I noticed being confused, and slight memory problems, but now I am having serious health issues. I have extreme pain in my legs, most joints, middle and upper respitory pain(mostly at night), and just don't feel well. 6 months ago I was running half marathons, now I can barely exercise for 30 minutes a day. My Dr.'s have no idea whats going on, but tell me that Topamax is not the problem. I don't think they know what their talking about. Keith