This is my first cycle using OPKs. My cycles are usually 28-30 days. Today I’m on CD 13. Glow predicts ovulation will happen on CD 16. I am new to OPKs, but shouldn’t that mean that I should be seeing the second line getting darker and not lighter? Is it possible for their to be a dip in LH hormones before the surge starts? Or is there a chance I won’t ovulate this month since it is getting lighter when I should be about to ovulate? Here is a picture for reference. The first (top) strip is from CD 7 and the last (bottom) strip is from today CD 13. Please help!