Using OPKs with Clomid

Katherine

Hi everyone! When should I start using OPKs when on Clomid? I’m due to start taking it tomorrow night for the first time so just wondering when I should start tracking. I’ve always had super long cycles so would start testing like CD 23 before getting into Clomid and Provera for the first time this cycle (my cycle was 69 days this time 🙄). Thank you!