I went about my knee and it turns out that my Dr runs like 20 mile routes and stuff so he was really supportive, telling me places to go, good nearby shops, physios etc. Said I should get gait analysis and decent trainers, but my knee is okay to run on unless there is pain again .... discomfort is okay.
How cool is that? (And he told me I have great runner's physique! :D, the moral of the story being that for an ego boost and friendly chat, go and see my local Dr!)