Why won't my ankle work??

5 years ago I broke my ankle quite badly. I had to have two pins on the inside of it, and a plate with 6 screws on the outside. The metal work was removed and the ankle was fine - a few aches now and again, and it would swell a bit if I was standing on it for an extended period of time, but generally it was alright.

However last year I jumped over a puddle and landed funny on it, and since then it has been a real problem. I have a consistant limp, which is particularly bad if I have been sitting down, and the ankle has become stiff. Even when I 'walk it off', I still have a slight limp. It will swell throughout the day, and I regularly have to do RICE in the evenings and at the weekend.

I have been to my GP and he has said that it is because I am overweight. While I can't argue that I need to lose weight, I have lost over a stone in the last 3 months and I still have the exact same problems with it. I had to bully my GP into sending me for physio, which has helped a little. But now, rather worryingly, I have started to develop a pain further up my leg, particularly in the back of my thigh. I am unsure what I should do about this?

I have become a bit of a gym bunny over the last couple of months (trying to shift the weight) I have been doing Spinning (static bike) classes, as it is low impact on my ankle and yoga.

Can anyone suggest why I am getting this pain further up my leg, and indeed why my ankle won't get better? Do I need to see a specialist or is it a question of shift the weight and the problem will also go?

Am starting to get desperate now, I miss wearing high heels!

Thanks in advance for any and all comments