dawn2820- Test again later in the afternoon/evening? My positives usually show up LATE at night, one even showed up at 2:30am. The LH has to accumulate in the urine, and for most people, that doesnt occur until later in the day. Your lines yesterday could be a result of you taking the test later in the day compared to today and/or the urine wasnt diluted. Also, LH is almost always present in the body at a very low level and fluctuates, you may have picked up a higher amount yesterday than was there today giving you that line, but none high enough to be detected as the surge. My lines faintyly come and go throughout a cycle, but about 2 days before my positive it gets noticeably darker.