I am on seasonique, is cramping for 2 weeks normal?

I started Seasonique (birth control that gives only 4 periods a year) about 2 1/2 months ago, and even though I was getting cramps last month without a period it only lasted a few days. But now I have had cramps for about 2 weeks, period is not due until another 10 days or so. Is this okay? Anyone out there taking Seasonique too? I heard the spotting for up to 20 days was normal in the first 91 day cycle but is prolonged cramps normal too?