Thanks guys, I'm trying to keep it moving as often as possible, but it's actually worsened considerably. I walked a 30 minute walk in an hour today, just to try and get used to walking on it, but it's not looking great. I'm just glad I can still drum with it, but I think I'm gonna have to use just my ankles to lose the pain.
Thanks a lot for the advice. I'll try warm up as much as I can from now on, and hopefully it'll go away. Much appreciated guys.