Antenna motor?

[SVeXy96]

Hey guys...so I hardly listen to my radio because I hate commercials. Now I am so sick and tired of all of cd's I want the radio again...problem is apparently my antenna is busted because it won't come out anymore when I turn on the radio and off my cd player. I am using an aftermarket cd player if that makes a diff, but the antenna still worked after I had it installed and now it doesn't. I gave it a lil tug, but nothing happened. Any ideas how to fix it or check it?