I'm finally plucking up the courage to see what's going on after 21 cycles and nada, zilch, nowt. I have 24/25 day cycles and according to FF I am ovulating on cd10/11 so I know I need a test in cd17/18 not cd21 but does this make a difference to the cd3 test? Is it cd3 regardless if cycle length? Hoping someone in the know will come along and tell me!