My shin splint pain has moved upward, what does this mean?

I've had shin splints for the longesttttt time ever!(since April) And I've done about everything under the sun to try and get rid of them but nothing seems to have worked. I rested, got orthoditics in my shoes, built up slowly after rest, have been strengthening my hip and core muscles along with balance and stability, and have been icing 3 times a day for 20 minutes each, and running on only soft surfaces now that I have had to start training for cross country again. This is everythingggg that has been suggested to me and I'm running out of options, I was checked for a stress fracture about a week ago and its likely that that's not the problem. Now the pain seems to have moved upward, to the point where it almost seems like it's not quite in my shin anymore? It's pretty close to my knee now, but not quite up high enough that its knee pain but it still doesn't feel like shin pain. I don't know what this means or if this is serious so if you have any suggestions or comments, anything is greatly appreciated! Thanks so much everyone!!