Ford's headlights won't turn on, but hazard lights will. Help?

Ok, so my 1990 Ford F-250 is a Jewel. And I say that sarcastically. But tonight I had to drive home without my lights on. When I stopped the truck at a friend's house, the lights were working just fine. When I started it again, and tried to turn on the lights, the two-stage headlight knob would click through both of its stages (hazard light and headlight,) but only the hazard lights would come on. I didn't blow a fuse, and all other lights on the vehicle work just fine. I tried turning on my high beams, and the floor-button seems to not click anymore like it did before. Could that be the issue? Help please! Need to work tomorrow night!