This is my first bbt charting that I have done. In the past I have used opk but wasn't sure if I actually ovulated. Anyway my opk was positive always (past 5 years) on cd 12-14. But for some reason my opk plus bbt showed that I did ovulated on CD 10. Ok so that would just be a randomly different cycle for me. But what gets me confused is that the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says I'm due for AF today? This would be CD 23 for me. I always have had a 28 Cycle.

Why would the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> predict AF today? I have no signs or symptoms that AF is on the way for arrival today.