Just a quick question, I have been using OPK's for a few months now (clearblue digis) and I have never had a smiley face positive. I have signs of ov such as ewcm and a break out of spots, I sometimes feel ov pain too. Does anyone know why the opk don't show a positive for me? I usually test around 2pm from cd 8. I can't chart my temp as I am such a rubbish sleeper.