Stop running for awhile!!!! It will only get worse. Also, make sure you have shin splints and not a stress fracture. The pain can be similar. I used to be a cross country coach and have had kids that thought they had shin splints only to find out it was a stress fracture. If you have access to a gym, try the eliptical machine. Or, if you have access to a pool, swim and "jog" in the water. Hope you get better soon!