Testing Clarification

I realized I should probably clarify this whole madness that is testing. At this point I am just testing for an impending ovulation, not for pregnancy. As I said before, at this point the first battle is just getting my body to let go of a freakin' egg! But unlike pregnancy tests, seeing two lines isn't a clear positive. The test line has to be as dark or darker than the control line. But, many times not the WHOLE test line is as dark or darker so at least 50% of the test line needs to be as dark or darker. Who the hell can tell what half of a millimeter wide line is?! Certainly not me.