Ovulation??

Courtney • Wifey. Dog mom. Mommy to the most awesome beautiful tiny human; Stella❤❤
Glow says today's my peak day and I took an opk (dollar store cheap-o but says ove r 99%accurate) everyday since af ended and the line is lighter almost non existent the closer to my expected O day!? It was darker the day after af? This is so frustrating. I have a 26 day cycle. Normal periods. Anyone else never get positivite opks and still get pregnant?