I'm so confused when to have my attempt

Hi Atomic

I've never used opk strips previously when ttc for my boys and I dont understand when is a first positive opk?Does it mean when your opks change from just 1 line to 2 even if the second line is not as dark? My opks just started showing up a second line yesterday afternoon, do we have attempt today or wait until I have 2 dark lines?

Thank you for your advice

No. It is when the test line is as dark or darker than the control (even if they're not super dark, the important thing is that they're equally dark at the same time)

Thank you😊