Bbt and ovulation strips

I'm currently trying to figure out what days I'm ovulating and using both ovulation strips and basal body temperature, but was just wondering (sorry if this sounds really silly) what's the best time to record the temperature, and what happens when you ovulate? Does it go up or down... Sorry again, thanks in advance

Ovulation strips may not work I understand as I have pcos.. So temperature as well to be sure