Why Does My Predicted Ovulation Date Keep Moving in Glow?

Rachel

Over the last couple days, my ovulation day has moved at least three times in Glow and it’s extremely frustrating. The only new information that I keep adding onto the calendar are my ovulation test strips (which have all been negative thus far), if I’ve had sex, and if I’ve experienced any symptoms. So I’m really not understanding why it keeps moving. Anyone else ever had this issue? I can’t count on this app to be dependable for tracking if it keeps moving!