Sounds like your gauge is going. It might have just got stuck, but if it happens again, that's the culprit. You wouldn't have gotten the light if it was your sender. Looks like you might try finding a junkyard in your area. Not sure if you would have to replace the whole cluster or if you can just do the fuel gauge.
The issue the 05 and up are having is the gauge is working but the sender in the tank isn't. I just replaced mine a month ago.