Yeah, I'll echo everyone else...time for a new doctor. I'm not sure about where you go, but where I go there are small biographies of each of the doctors, so when I had to see one for knee issues a few weeks back I picked the one whose biography indicated that she was an avid marathon runner. I feel like if you see a runner their first instinct won't be to have you stop running forever...maybe for awhile to let the inflammation subside, but I doubt they'd tell you to give it up completely.
Super thoughts...yep, that's what I did when looking for a doctor. Sadly where I am at I am very limited in my doctors. I thought I had chosen the right foot/ankle one...WRONG. And the past summer really did not get any answers with the sports medicine...but he got me healed! Most of the docs around here are cyclists or skiiers...not runners.
What kind of shoes are you running in now? When I saw my doc way back when, she told me I was kind of flat footed as well and recommended a $25 pair of orthodics - I took out the factor inserts that came with my shoes (Brooks Adrenalines) and put in the orthodics, which are called PowerSteps. They COMPLETELY fixed my problem. So for me it was all in the shoes. After that I started adding strength training to my regimen and was able to ditch the orthodics a couple of years later and run pain-free without them.
Brooks Adrenaline...Are these over the counter orthodics? I would be interested in learning more about them...
Check out this video on Runner's World about shin splints...might give you some stuff to look into with strength training, flexibility, shoes, etc. He specifically says that you want shoes that have good arch support. The video they link to at the end (IronStrength) is the one I used when I first started strength training:
http://www.runnersworld.com/injury-...de-the-Doctor's-Office:-Keep-Shinsplints-Away
Good luck!!!!!