Opk Help

Amber • Mommy to my rainbow baby Aria

Hey guys. Need some help. Once I usually test in the morning and afternoons. Well yesterday I tested and it was nothing. That afternoon I retested and for my dark line for my surge. However I woke up this morning to make sure it’s passed and now the line is even darker. I normally would have started to go back down. So now I’m confused on when my ovulating will be. I thought it would be today but could it be tomorrow?