Hiya, I'm new to using opk's and from on here I e learnt that the test line should be as dark or darker than the control line.... Correct me if I'm wrong at any point lol, well I was wondering does the test line ever not show at all? Does it graduate from nothing to darker, or is there always a line but lighter than the control line even when you're not ovulating... I hope that makes sense! I'm specifically using the clear blue ones with smileys, I got no smiley but the test line was only slightly lighter than the control line... I'm just wondering if I test again in a few days is it likely to get darker or if it's always going to be the same until it suddenly goes darker than control line.... Ok I feel like I'm not explaining myself very well lol, I hope someone can understand what I'm asking and can advise! Im just looking for an idea of where I am in my cycle after coming off bcp. Thanks