Let the brakes cool off and drive the car again. If you still have the problem change the brake fluid. If you still have a problem, you may have caused a problem from trying too hard to bed in the new pads. If you have glazed the pads and rotors, you will need to clean off the glaze. Rough sand paper on the discs and pads might do the trick, but sometimes it is easier to just machine the rotors with a light cut and sand the pads.
We had an Explorer in the shop about two weeks ago that just would not bed in until the rotors were cut again. The owner lived in the mountains and overheated the brakes before they were properly bedded in. After cutting the rotors, we kept the car for several days, driving it often, until we were happy with the bedding in before releasing it back to the customer.
