Already ovulated?

Okay so I track my period and I also use glow. Glow says my most fertile day should be like Sunday or Monday. Well I track it using my cm and my normal calendar. I believe I've already ovulated and I just wanted to see if I'm right. I took the top ovulation test yesterday and the bottom today. Clearly the levels are going down right? Meaning I already had my surge? But does that mean I'm about to ovulate or I already did? These things are so confusing. It says if the line is as dark or darker than the control then I should ovulate in the next 48 hours. But it wasn't that dark and it keeps getting lighter. We have been bd like crazy but still I like to know these things lol I didn't check my cm yesterday or today. But I think it was Sunday I had stretchy clear cm not quite egg white cm. help please!