So this month my period came a few days after it normally does and so far I have been using opk and have had 4 flashing smiley faces and the app has not updated the fertile week, it shows that I am almost at the end of mine but I still have not had a solid smiley face, any reason why my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> has not updated itself?