So I am on a birth control pill and have been taking it for a year or so. Well last month I got my period a will early (I use a couple prediction apps for it, plus I follow it with my birth control pack) and I was still using the active pills when I got my period. This is the first time something like this has happened. So I followed the pack, finished it and started my new pack 1 week after my period had ended, never missed a day or took a pill late. Now my period is currently 3 days late and I'm beginning to wonder. Has anyone had this happen and if so what was the results. If my period doesn't come in the next couple of days I'm going to test but I'm just wondering if I'm over acting.