So I normally have 28 day cycles, and get a positive OPK on CD14. However, in September, I randomly didn’t get a positive OPK until CD17. I read somewhere that one’s LP doesn’t change; if you ovulate 3 days later than usual, your period will start 3 days later than usual. Is that correct? I ask because I started my last period on September 3rd. In months past, I would have started again today (28 days after my last cycle), but I’m not expecting it until Thursday because of my later ovulation. But, Glow is telling me my period is due today. Is this just because of how my settings are in the app? The pink circles designating a period are showing in the calendar from 10/4-10/8, but the “Your period is due today!” notification is throwing me off.