Green days

Okay, so since I'm still new to the app, I'm still trying to figure things out. Are the green days before you O? I understand they are supposed to be your most fertile, but I don't ever ovulate that soon after my period ends. Yesterday was supposed to be my most fertile day, yet I bought okps today and not even a faint second line on the test today, so I know I'm not where close to ovulating. Although my cervix is high. With me putting in the negative ovulation tests, will glow adjust the days? Or does it take time? Sorry if I'm rambling, this is the first time we've ever started to track, or use any type of "help" to TTC. Thanks in advance!