Zelnorm Question

I asked this question on the Zelnorm board, but I don't think anyone's read it yet. I know Zelnorm is for primarily IBS-C people. Which now, I am. But, instead of making me regular. I'm still having C. It's annoying. Has anyone else had Zelnorm constipate them instead of helping them go more? I get some cramps if I try to extend the time in between doses and I keep thinking that maybe I'll finally go... but alas, it never happens. Once I take it, the cramps go away and nothing happens. It's so frustrating!!!!!!!!! I want to be normal again!!! (ok, not like I was really normal before, but at least digestive normal.)