5mg Letrozole

Samantha • Grateful mama of 2 💞

I am currently taking 5mg of letrozole a day from CD3-CD7, today is CD6. So tomorrow is my last dose to take. How soon after tomorrow should I start taking OPK's? I dont want to start them too soon, but I also don't want to miss my ovulation date. We have to have timed intercourse from CD10-CD18, but it will still be nice to know the exact day I ovulate.