Track pad separation from the body

I just realized that the track pad on my macbook is loose. Correct me if I'm wrong, but I was under the impression that the track pad was a single piece with the rest of the body and that the feedback was haptic (i.e. no physical movement of the track pad). I just realized that the track pad is now loose and when depressed moves into the computer. Is this normal? Is there a way to fix this (I'm assuming replacement is the only option)? Any input would be welcomed.