no oil pressure

Well this sucks. 70 degrees today in ohio and a perfect day to take the Duster out. Drove to the gas station, filled up, and off I went and hopped on the highway. Windows down, music up.... then I starting getting off the highway and that's when I could hear some not so pleasant clanking noises. Glanced down at my oil gauge (mounted at bottom of dash so I couldn't readily see it without purposely looking) and that's when I saw 0. I was only on the highway for about 7 miles, but who knows how far I went like this! It stalled when I pulled into the gas station and I coasted into a spot and called a tow truck.

I think it's safe to assume the pump went out, but is there anything else I should check first? Oil level on the dipstick was good and still looks clean. I'm almost afraid the engine won't start up again.