Hey ladies, I usually use the clear blue OPK that shows smiley face when LH is detected, but this month I got the new First Response digital OPK. It's supposed to detect your personal levels on cd 5 and it remembers the level so it can detect your surge, even if it's not as high as the "normal". Has anyone used this newest OPK? Did they seem accurate? I am on cd 11 and should be ovulating soon.