00 camry le 70k

I ve been driving all day, then I put the car in reverse - go back a little bit and I hear this clunking noise- What do you think might be wrong?

I have a 1998 Camry and noticed this right away. After asking the local mechanic and looked up the NHTSA reviews on the Camry, it looks like Camry are excellent cars but their brakes are in need of attention. Every time I back up I hear this "clunk". From what I understand is the brake assembly is shifting into another position due to the direction of travel of the tire vs. the position of the brakes. Is there a fix, not that I know of, just annoying and try to back up without aggressive accelleration and braking. If there is a prescribed fix by Toyota, I would like to hear it.

It's your brake pad shifting noise. A lot of cars do that. It won't do anything harmful.