I'm wondering what measures Glow uses to predict the start of your next cycle? I'm not great at consistently logging every day, but I always adjust my period days to reflect when my flow has actually started and stopped. looking back as far as October, my cycle is usually between 25-28 days. This month though, Glow is showing I shouldn't be due until day 31 of my current cycle. Doesn't make sense to me! I'm on day 28 right now- trying not to get my hopes up anyway- but by my estimation, I'm at the tail end of when it should be starting, not two days prior. Am I doing something to make it inaccurate?