N2l - LP can vary in length. Mine does all the time. I'm actually trying to address short LP now.

Pretz - do you temp? Or at least note CM changes? No system is 100% accurate to confirm O except ultrasound. If you ovulate on CD17 and AF turns up less than 12 days later and you regularly have short luteal phases (not just a one off), then you may wish to deal with it. I'm trying to find a natural method now and am stressing myself out on dr google.

AJC - what dose of B6 did you take? Was it in addition to a prenatal? When did you stop taking it? I took B6 cycle before last but it was 250mg per pill and that seems high based on reading I've done so I didnt take it last month.