Glow says I can take a test tomorrow but I couldn't wait and got a bfn. I'll try again in a couple of days but if af rears her ugly head and counts me out this month, I think I'm going to start using ovulation kits. I know glow does its best to guess when I'm ovulating. But I think knowing the two days will be extremely helpful. No more guess work you know? How many of you use ovulation tests?