I have been using the digital ovulation kit and have been testing these last few days. I have been testing early as MMC over Christmas seems to have mucked my cycle up. However on day 15 today the blinking thing is showing an error! I held off drinking anything all morning to test again at lunchtime at work and it's done the same thing again. Day 15 is my normal ovulation day and I so wanted to see the smiley face! What do I do!!!!! Help, going mad here!