My Ovulation Day Keeps Moving

Ta

Last night and this morning the calendar moved my ovulation day. This has never happened to me before.

Originally it said today (9/21) was my ovulation day. Last night, it said that Saturday (2/22) was my ovulation day. I woke up this morning and now it says this.

Why does it keep moving further and further out??

I haven’t experienced this before. Any help/suggestions is very appreciated.

Thank you.