Millsy,
Not sure if this is of any help, but I also fractured my ankle nearly 12 weeks ago. I fractured my distal fibula, which is a non weight bearing bone, just below the ball of the ankle It was a non displaced fracture. Initially it was put in a cast, but upon assessment at the fracture clinic, the cast was taken off and I was given a foam boot to wear. 6 weeks later I get the all clear, but the doctor said it could be another 6 weeks or longer before the discomfort completely went away due to suspected ligament damage.
I have been running for about 4 weeks, gradually building the amount I am doing per week. My ankle still aches after runs, and I am wearing an ankle support when running. However, I feel my ankle is getting better and better each day, and plan to try running without the support next week.
My suggestion to you would be that if you feel it is getting better on it's own, then let it continue to heal by itself. Don't overdo the running though, and build it up very very gradually. If it isn't getting easier, or your not pain free in another 4 weeks time, then it might be worth a visit to your doctors at that point.
Be aware though that I have no medical qualifications, and this is only from personal experience.
Darren