should be fine, but you need to check them. easiest way to do this:
jack the wheel off the floor
grab the wheel at 10 o'clock and 2 o'clock (remember your driving lessons?!) and give it a good twist / shake. There should be no discernable play.
Spin the wheel in a forward rotation. If it rumbles noticeably (not brakes touching the inside drum face, if it is braked) then they may need replacing.
If you get any of the above then strip them down, clean them out, inspect them and, providing they're ok, re-pack them and put it all back together.
Your bearings shouldn't have gone, as they've not travelled very far, but it's likely they'll need re-packing and adjusting.
Any questions, post them up. Good luck.