This is why I hate OPKs. I really think the top one is a negative - I have gotten the same results a few days in a row. The lines are SOOOO close in color that it is really hard to tell if it is positive. Since the one on the bottom is negative (same sample used); I really think the top one is also negative.
Last month when I got a very strong positve, it was VERY obvious (second picture). I know I should just give in a use digital, but they are so damn expensive.
Today - CD 16
Last Month - a VERY positve result. After 5 minutes (the end of the test time) the result was the same; but the picture came out crappy.