Guesses on when I should start testing for ovulation?

Heather

Hey guys, I just recieved my first full 7 day cycle since BC was removed. I've got my pre-seed, my pregnancy tests and my ovulation tests. My cycle is roughly 28 days apart. First day of my menstrual cycle was November 25th and my last day should be today. At what point should I start testing for ovulation? I've never done these tests before so I'm starting out fresh. Any advice? *Pictured below* Period and estimated fertile window.