hey guys i'm having a problem sometime wen i'm braking to a stop

its not like i stomp on my brakes really hard or anything..but sometime wen i come to a complete stop, i hear clickin noise.. like "click click clik (rapidly, 2-4 times) or sometime, ill only here it once

is there something wrong wid my brakes?? my wheels (18") or my rotors

what i do know as of now , is that my rotors are (wrapped) it shakes when i braking, but is this wut is causing the noises?? or is my rotor really f'ing up (perhaps cracking???) i'm on OEM rotors

or do i need new brake pads??

help!