Blazing positive opk for first time

Megan

I’ve been using clearblue digital opks for a few months now. Ive gotten peak results in previous months but this month it’s SO much darker. Any idea why? I definitely ovulated in previous months confirmed by bloodwork and bbt charting. Maybe I just caught the surge perfectly? Top red arrow is my peak from last month and bottom red arrow is my peak from this month to show the difference.