Treadmill running question pain?

Ive recently been running on a treadmill when i go to the gym. However, after about 7-8 minutes of running on zero incline at 6.5mph-7mph my shins start to get soar and the start to burn like crazy and I have to stop the treadmill. Ive never had this problem before and ive been running on the treadmill lat year all the time. I usually run for about 15 to 20 minutes but i haven't gotten that far because of the burning in my shins and the sorness. Also, it is winter now and I need to train for wrestling and basketball so i need to know the problem whether its my running technique or what?