Did I damage my harddrive?

[unimatrixzer0]

Basically to save the trouble of screwing in and then taking out the harddrive since I'm trying to trasfer stuff off two hd's to replace with one, I had the new hd laying on its side outside the case. I ended up accidentally bumping into it and it tipped over flat. After that I started hearing a clicking sound inside the harddrive until I restarted. Seems I can still read and write to the drive fine.

Just wondering if because of the clicking, if in a week I'll find the drive is dead =/