OPK help?

Camille • ♥️ IVF baby 03/2021 • Miracle baby 11/2017 ♥️
I've been using Wondfo ovulation test strips this week. I didn't get a test line that was as prominent as the control line, but I had one that was darker than the faint lines I got before and after it. Is that close enough? Or is it probable that I ovulated somewhere in that time frame and just didn't test st the exact right time?
M-F: No test line. 
Saturday: Faint line.
Sunday AM: Darker line. (Pictured left, starting to fade a bit)
Sunday PM: Faint line. (Pictured right)