When you feel the brakes pulses when braking, this could be an indication that the rotors are warped due to over heating.
When the brake pads squeeze the rotors to stop the wheel, the friction causes heat, and if the rotors are thin, this heat can cause the rotors to warp. this would cause the rotors to wobble between the pads while they are squeezing the rotors to stop the wheels - which would cause the brake pulsation.
I highly recommend you take it into the nearest 'AskPatty.com certified female friendly repair shop to have your brakes properly diagnosed to make sure there are no safety issues.
〉 Answered on Mar 3rd, 2015 by Amy Mattinat, Owner and Author at Auto Craftsmen Ltd
Sounds as though your rotors are warped and need turning. Have them checked, and the pads while they are there.
〉 Answered on Mar 3rd, 2015 by Gail Dunn, Owner at Women's Automotive Connection
Rear rotors are warped
〉 Answered on Mar 3rd, 2015 by Gelina Aquilina, Service Advisor / Mechanic at