The water in the base of the toilet is all gone? The toilet has a trap that holds water so the only time you'd see water spilling past the wax ring would be when you flush or if your had a leak from the tank into the bowl. If you didn't use your toilet for long time, it probably wouldn't be the wax ring. The fact that you've lost ALL the water in the bowl only after a few weeks suggests to me that there may be a crack in the bottom of bowl somewhere. I'd remove it put it on blocks and fill the bowl with water. Put some food coloring in the bowl and a piece of cardboard underneath, let it sit and see what happens. Or say screw it and buy a new one! Good luck!