Ok I went to get into my sho the other day and the brake pedal went almost to the floor, I then checked the fluid and it was fine. I drove it to autozone and got new front pads, put them in and no difference. I then bleed them and the right front had a bunch of air in it. After that they worked great until this morning I went to go drive and the pedal went to the floor again. I dont know whats causing this it just happened all of the sudden. PLEASE help this is my dd and I NEED a car to get to work.