First month charting

Angie • Wed, Aug 16

This is my first month tracking temp. I'm not sure how to read them. Glow says I'm 11dpo but fertility friend says 12dpo. I did forget to temp on cd16. How can you tell if when I ovulated. AF is expected this weekend I caved and tested early for a bfn. Just wondering if this chart looks promising or if I messed up somewhere.