So u have to apps that I enter my info in daily, and they are off by 2 days.. So I took a test because ovia sad I was4 days till AF but glow says in 6 days.. So of course I got a bfn and am a little discouraged.. But glow says I should start Saturday so since I tested now I know that's way early... Anyway I'm prob gonn just wait and see if I miss AF to test again just to be sure wish us luck!!