In October of last year I developed a shin splint in my right leg, presumably from upping my distance from 7k to 10k too quickly (funnily enough, the first 10k I ran was fine, but it was towards the end of the second one where I felt the damage). I wasn't quite sure what it was at first as the pain kept moving around, but in the end it was quite obvious that it was a shin splint so I basically abstained from running until mid-December out of caution. By then I could feel no pain or twinges upon walking so decided to go for a gentle run to test the waters, and the pain returned just as intensely as it had the first time. Went to my GP in case it was anything more serious; she agreed it was likely a shin splint but referred me to radiology to rule out a microfracture, but the X-ray came back completely normal.
Any advice for what to do now? All I really did last time was rest it as much as possible for 3 months. I'm resting it at the moment but I have also heard that calf/dorsiflexor exercises are useful. How long does this usually take to heal to the extent that I can actually run again?