I did pump several times, plus used a bleeder pump to bleed them. I just ordered a master cylinder. Has to be that because there are no leaks.Have you pumped the pedal a few times? Usually, after changing the pads (and thus compressing the piston), the first brake application will go to the floor. A second or third application should bring it back to normal.
If that doesn't help, and there are no external leaks, you might be looking at a bad master cylinder. That said, it's hard to imagine it would fail so completely and at just the same time as a brake pad change.