I keep updating my period log...

Like I said I keep updating my period log and each time i say I'm late. The first time I was scheduled for October 29th it's now about to be the 7th.... Haven't tested just because I'm nervous and don't want to get my hopes up. Also this is my first month using glow... And none of my info was saved from my other app. So I've been up in the air, anyways.