I was driving my baby home yesterday. (94 Cobra) and she jerked forward all of a sudden. I had no brake pedal and performance loss. Like my motor was bogged down. I could get my brakes to catch but I had to stomp them, but they made a grinding noise so I stopped that.. Someone said it may be the brake booster, but I have NO IDEA how to tell if I blew the thing or not. Any help? I'd appreciate it!