Karen, when this happened in my Ford, the problem was caused by cheap windshield washer fluid. A jelly would settle out of this stuff and plug the system. The plugging was in the vicinity of the pump. Here's how I solved it:
I flushed the washer system out a few times with hot water. This was pretty simple -- I just loaded up the washer tank with hot water and ran it through with the stick control. I shielded the windshield with something to keep the ratty stuff off. Don't squirt hot water onto the windshield if it is cold!
The problem returned a couple of times, so I had to repeat the drill again during a trip. After three rounds of this, the problem vanished permanently. So did the gallon bottle of cheap pre-mixed washer fluid. I've used the expensive stuff since then, or just dumped some rubbing alcohol into water. Water that's loaded with minerals, of course, may clog nozzles due to sediment.
See if the above drill works.
Richard