Help! Opk getting lighter??

Krystal

OPKs went from light, to darker but not same dark as the test line, and now lighter again.. no positive. Tomorrow is supposed to be ovulation. Should I be concerned that they’re getting lighter and not darker? I haven’t had any CM yet so I don’t think I ovulated.. TTC is literally going to make me crazy. Lol. CD12. Cycle usually about 23-24 days. Also- ignore the spill lol.