I've been tracking my ovulation daily. Friday I had a pretty close positive and my weekend was so busy I couldn't  keep a close watch on it, now my tests are lighter and I have no idea when I actually ovulated. Praying I did the BD at the right time but I ovulated early this month which was not expected either. Do the tests just stay light afterwards? Or does it start to look like one line after a while ? How do these damn things work?