Psyllium = no poo?? whats going on?

I started taking psyllium husks on Monday, I am taking sever tablespoon fulls a day - the first 2 times w/ bentonite clay and I have been severly constapated since... whats going on? I am drinking lots of water and eating leafy greens... This is so weird, other than this side affect I love it for it's bulking... please help :)