Af accuracy and ovulation

Cassandra

Glow is usually accurate about when af comes for me. Glow said within the next 3 days. I think I’m out this month tbh but I know I’m not until af shows up. This month I started tracking with bbt and confirmed ovulation cd25 but had peak on cd20. Fertility friend estimates af to start the 18th. That would make my cycle 40 days give or take. If af shows within the next few days did I truly ovulate and just extremely late or could I not have? I plan on telling my ob that I finally confirmed through bbt but cannot be seen until December. I’m just curious as to what I do from here!