I purchased the Clearblue Advance Ovulation Tests, started testing on Day 9 (approx 29 day cycle over the last 6 months), and it showed nothing until high fertility on day 11, and peak fertility on day 12. Then the tester got stuck on (smiley face would not reset), and I couldn't retest for day 13. According to my WomanLog app, I shouldn't have ovulated until a few days later. Was the test defective, or am I ovulating earlier than halfway through my cycles? We have been trying for 6 months (I am 37), and I am questioning if I need to seek help at this point.