OPK confusion

Malina • Mommy to Serenity, Harley and my Angel baby Ava. 👼🏽 💞

I took an OPK a few hours ago and it was almost positive. The second line was almost as dark as the control line. I decided to take another one just now and it’s so faint like barely there. I’m confused. Am I ovulating or not? Does the hormone fluctuate?