Just looking for advice on using these. I did one this morning and got a faint positive line. The test instructions say this should be treated as a negative, but is it the case that there is about to be a LH surge (much like the faint line on a pregnancy test that gets darker each day) or conversely, can it mean that ovulation has already happened and the LH levels are wearing off? Or should there be no line if ovulation has already happened? The instructions didn't stipulate on this.