I hate that just because my period is late right now, all Glow predictions does is push the start date back. Which in turn throws my ovulation days out of wack. The ovulation prediction I had a few weeks ago (and went by) is now a total complete set of days. So idek if I BD on the right days. Glow even told me to test one day, but now that day is supposedly only 4dpo. Ugh 🙄 Give us the option to have a late period. It can be a multitude of reasons.... hey, maybe I'm finally pregnant! (I wish).