Could this be my fuel pump?

Most likely a feul filter but could be your pump do the filter first needs to be done anyway.

See if your engine oil is starting to smell like gasoline. If so, I would say you are running too rich, possibly flooding the engine. When it sits for that hour, the gas would drain into the oil, and the vehicle would start. Try checking for vaccuum leaks, or have your fuel system professionally cleaned (most shop will do this for under $130) as the injectors may be 'drippy'. Good luck.