I used OPK instead of pregnancy test

I know, I know. It’s not the same thing, but I didn’t have a pregnancy test only OPK’s and I always heard about how OPK might be positive if pregnant. I know these aren’t positive, but over night it progressed visibly darker. I am 1 day late. Just trying to see if I should even go get a pregnancy test or wait it out.

Last nights OPK:

Todays OPK: