Hi, I guess I'm just wondering if anyone has encountered this.
Background:
My body hates birth control pills, over the years I've gone through like all of them. Finally I found Tri-cycle is ok, but left me with no sex drive. A while later I tried Seasonale (the one where you only get a period every 3 months). That one has been better and I even have a sex drive again.

The issue is that once in a while, I get a period that's not a period that lasts FOREVER. For example, according to the pill I should be starting around the 18th or so. But I've been going for a few weeks already and no signs of an end. I know that spotting is normal, but this just seems ridiculous. It sort of freaks me out thinking that it's not working at all. Anyone relate, or have and idea of what/why it's happening?