I have a question!!! Need help.

Kristalyn • Well girls I`ve been TTC for almost two yrs now and have been using glow for 3 months now so I`m hoping it will happen soon!
Ok so glow does all the calculations for is which is great!!! But my question is had anyone else had their fertile moved??? My most fertile day was the 8th than this morning doing my log it showed my most fertile day as this past Sunday??? I'm so confused now??? Any ideas or answers...