AF came. It is 12months of trying now. 7months of POAS (hpt and opk). And zero. Measuring bbs, weist, hips, weight every day. BBT every day. Charting CM. Nothing. But from all of IC I used AN ADVICE-THEY ALL GIVE YOU NASTY EVAP (even pinkish ones). Only you POAS can know how they can torture your mind. So after all of this, my conclusion is: none of BBTfluctuation, CM looking, OPK darker about 10dpo does not matter. And...definetly do not waste money peeing on stick/cb/ept/frer before AF is due. Now let us say: tomorrow is another day...