Chart temps??

Mackenzie • 28yrs ❤️ Married , 👼July 2018, 👧🏻October 3rd 2019, March 2022 👶🏻PCOS. 🙄

So it looks like I ovulated Cycle day 20? Maybe.. because following that I have elevated temps. I am new to this all, correct me if I am wrong. I guess my question is why the big dip following and still have elevated temps? I have light spotting. Should temps be going back down since period is to follow?