About 3 weeks ago, I started having stiffness in my right leg, knee and hamstring primarily, which made it difficult to walk. After about 10 days, the stiffness passed and it is now just a heavy feeling of fatigue and also a burning sensation on occassion. The fatigue seems to diminish somewhat with exercise. I haven't fallen over and I don't it is 'weakness' necessarily. This is mostly in my right leg, but I sometimes get the burning in my left also. I'm not sure what, if anything, to do about this. Could it be MS related? I don't want to go overboard on pinning every problem on MS and then not getting them treated. This could just be a muscle strain/injury, for example. I was working out quite strenuously prior to the stiffness since my balance has slowly been improving, but at the same time, I have never felt anything like it before and the burning pain is not localized. It just doesn't feel normal. My primary doctor said to wait for my upcoming MRI's and see what they show. He has been useless throughout the course of this illness. It seems like there is one problem after another, but not all together, as if I a progressing toward something. First the light-headed feeling, headaches, balance. Later, the muscle twitches and shivering. Then the tremors. Now the muscle stiffness and fatigue with most of the other symptoms diminishing or maybe just lurking in the background. Does anyone have any advice? I could go to urgent care, I suppose, just mention the pain in my leg and nothing else, see what they say.