Ok the other day I was backing out of my driveway and my ABS light came on and then it started blinking. I then hit the brake pedal a little harder then normal and it went off and hasn't been on since. The thing is I didn't think I had Anti-Lock brakes and if I do they don't work because I can feel them lock up if I press down too hard when it's icy out. Anyway where should I go from here?