Fertile days keep moving?

Tessa.🌻 • Wife.💍 Mommy to two beautiful little girls.💕💜
A few days ago, Glow told me my fertile week was the end of February, into the beginning of March. Now it says this whole week is my fertile week, and none in February. And for the past 4 days, I get the notification telling it's my peak day. Four peak days? I wish. Anyone know what's up?