Last month I used clearblue digital ovulation tests, they worked absolutely fine and I got my smiley face when glow predicted on CD 14/15 ...but no luck that month!!! This month we have BD every 2nd day since CD 8 and been using clearblue ov since CD 10...it's now CD 17 and I still haven't ovulated. I know this cause I've not had a positive test and my boobs haven't gotten sore yet (they do get extremely sore after ov) what's going on? And is it normal for my cycles to vary all the time? We've been ttc since October.