OPK newbie

Shelby • adeline’s mama 102418 | 👼🏻 011220 | ttc #2 | dog mum | artist 🎨

I started using OPK’s to see if and when I’m ovulating since I haven’t had a period since coming off the pill back in December. I’ve had pretty dark lines (yesterday were my darkest) but all of them are still pretty dark...Is this normal?

(I know OPK’s don’t confirm ovulation but I don’t have enough data with my BBT tracking to confirm it either yet)