I came off the pill almost a year ago after having been on it for 8 years. Before I was on it my cycles were pretty regular - 28 days ish. The first few months stayed around that, with one of 30 days, but the last few have got shorter and shorter - 27, 25, 23, 22, now 21. What the heck is going on?! Is this normal?? It's getting rather hard to predict!