Sounds like you either blew a fuse or tripped a circuit breaker

The white (neutral) wires carry current and just because you had switched off the light fixture doesn't mean that other devices on that circuit weren't energized. Electricity flows in a circular path, in on the "hot" and back on the "neutral". Disrupt one or the other and the flow stops (and lights go out).

I'd suspect there is another neutral connection in that circuit that is now loose. The only way to find it is to go through the circuit device by device, box by box, until you find it.

That's a scary "Oops!".

Did you just turn off the switch, thinking there would be no power? Not a good assumption. If that's all you did, you were probably working on a "live" circuit (There's more than one way that things can be wired.)

First I'll try turning the circut breaker off and on. Then if my husband is still speaking to me, I'll get him to do the rest. Thanks for the help.
Diane

All I can say is that you are one lucky woman right now.

Call an electrician after checking your basics... circut breaker, etc.