A3 braking problem
 

Hi guys...so iv got an A3 2.0tdi 2006 spec and iv just done my brakepads, all four but when i press the brakes the car doesn't stop in a hurry iv got to really push the pedal in and the pedal feels 'loose' and there's a huge clutter noise coming from the front left side wheel while braking and when taking any speed hump ... what could be the problem?? if anyone could suggest what i could do..

Thnx in advance