This month I started using clear blue digital OPK. According to the directions I started testing on…

This month I started using clear blue digital OPK. According to the directions I started testing on CD 10. Based on my CM I’ve been tracking for months I was guessing I usually O around CD 14/15.

Today is CD 13 and no Smiley face. However, when I first took the test on CD 10, I ejected the test and there were two blue lines on it. Since then the first line has gotten lighter, today barley there.

I know the package says to ignore the lines, but could I have missed my window and O early? I would assume the lines would get darker as I got closer to O.....