The light came on 3 months ago but i kept driving it; today i removed the wheels and opened up the calipers to change the brake pads(front) and the pads were still like new. I checked the Brake Fluid level and it was fine, what could it be and how do i fix it??

This can be tough to track down. If the brake pad worn indicator was an option on your Audi, VAG-COM can be used to disable this "feature" permanently.