Shin Pain

Hi, please can anyone help me...
I had my first football pre-season training session on Tuesday evening which lasted about 90mins, which involved quite abit of running and ball work. Towards the end of the session i started to get a pain in the upper right(outside) of the shin bone on my right leg. I still have this pain and the pain increases when i walk upstairs. I have had osgood schlatters when i was younger and i know that this is more central to the knee and upper shin area, and i have read about shin splints and people seem to say that this is more in the middle/lower part of shins.
Any ideas/help would be much appreciated.

Thanks