I am a first time pool owner - I removed the cover, put in Yellow Out, and put the filter on "recirculate" for a few hours. I now realize that the water level was far too low (just at the bottom of the skimmer line) . I increased the water line. But now when I turn on the pool, the pump makes a loud noise and the pressure gauge is at 0. I don't see water going through the impaler or entering or leaving the pool, and the skimmer does not seem to be sucking in any air. Did I break the pump?