I think it's normal for you to have formed BM's the first 1-3 days. It depends on whether you have been drinking enough water before hands. Usually for me, the first day I take the flush, I have a formed movement, the second day, a little more watery, then by the third just liquid.
I also use Pepe's trick of drinking regular water upon rising in the morning, then taking the SWF (Salt-Water-Flush) a little later. On my last flush, I sometimes had to drink a glass of water afterwards as well to start it coming out, but on this Master-Cleanse I have not had to do that. I think if you do this tomorrow, you have a more successful SWF.