How to tell if ovulation occurred

Hey all,

I'm new to charting. I was recently diagnosed with insulin resistance and I'm on metformin. I bled from 10/31-11/30, so i didn't take my bbt much as i was bleeding. I'm getting back in the grove and trying to figure my ovulation date. Per eve- which has all my period data- I'm "supposed" to start my period today, i have not. Here's dates and temps as i can't upload pic 🙄

Sex on 12/6 and 12/10

12/9: 97.65

12/10: 97.53

12/12: 97.52

12/13: 97.70

12/14: 97.89

12/15: 97.89

Thanks for any insight!