Ok so last week my brake light went on and so I figured out I needed to add brake fluid. So today when I was leaving a started my car and the brake light was on again so I popped the hood to check the fluid and I noticed a big puddle near the front passanger tire. I added the fluid and had no choice but to drive and pray that I would make it safe. What could be the problem, someone told me I might just need to change the disc, how exspensive is that?