what could be the cause of rear clikcking noise?

What is your question?

Ok I own a 94 De Ville concours and I've had it for about little over a year now and it ran pretty ok, about 2 weeks ago it started making a clacking noise coming from the driver's side rear tire...now it doesnt make the noise on speed bumps ..but it will on rough streets .My guess something came loose ...but when parked i push the car side to side and it wont do it but if push down hard enough then it'll make the clicking noise....anyone with similar problems or even a solution your opinion will be apreciated