When you say no power to anything, is that the outlet? what happens if you plug in a lamp? might it be a fuse? If the outlet is good, I would remove the bulb and try running without it and see if it works. It could be when you tightened the bulb, the wire behind the bulb may be frayed and the wires touched...
This is why Dr. needs to see you and won't troubleshoot you over a forum
