I am currently on CD 19 and my 8th day of the flashing smiley high fertility. We have been actively trying since CD 9. I saw that someone mentioned that if you look at the lines on the stick, if they are both very dark it means an LH surge? After reading that, I remember noting to my husband that both lines were very dark on CD15ish and then after that it went back to light. Could I have had an LH surge even though the monitor was flashing that it was only high? If so, why am I still reading high fertility??