So I’m new at taking ovulation tests. My question is the first test taken on 7/26 the line was clearly seen after about 1 minute. Now I barely if any have a line??? But GLOW is telling me their predicting I’m going to ovulate this Thursday??? Umm why is the line not getting darker?? I mean shouldn’t it be??

And my last day to take Letrozole was the 25th!! First time taking it. I go tomorrow to the dr for an ultrasound for a follicle check?? Lol this is all new to me! 🤷🏻‍♀️