For the past 4 months I have o'd around CD9. So this month when both FF and the CBEFM said I hadn't o' d by CD 19 I figured I was i wasn't going to o this cycle. CBEFM stopped asking for testing sticks as well after showing several high fertility days but no peaks. Well last night, after a few days of higher temps, FF rearranged my cycle to show I o'd on CD 13! We didn't BD around that time at all. I think the solution for me going forward is to is to buy a whole bunch of opk sticks and start using them again together with FF and the CBEFM. Ugh, another month wasted.