I know that with OPKs it is only positive if it is the same color or darker than the control like. I see so many others that you can see the test line fade in and out around ovulation. I went off BCP on June 11 mid pack. Why do mine do this? This is only the second month using them but they are starting to discourage me a little. I temp and FF shows crosshairs on July 31, DH and I BD on July 29... I am on CD 14 today. Did I miss this cycle with an early O?