YOU ARE THE ABSOLUTE BESTEST MRS BURGESS!!!! THANK YOU SO MUCH. YOU EASED MY MIND. I was using OVIA app before but it started to mess up. Before it started messing up it said AF was due on the 28th just like you just said. Last month it gave me a day and I was two days early sooo when I started using the two new apps and it put AF due on the 26th I accepted that. (two days early) Now if AF is due on the 28th then this is completely abnormal. I don't cramp before AF like this. It's been one or two times that I cramped seven days prior to af but it only lasted an hour or so and they were HORRIBLE. I've been cramping since I woke up and its just annoying. Haven't even needed Tylenol. Not to mention I have the absolute worst AF cramps normally.