Quick question for those of you who have taken these tests: did any of you consistently get faint test lines on each stick? I get a super dark control line and then a faint test line. I've got them on about 70% of the tests I've taken in the past 10 days, all of them reading as the empty circle "low fertility" with the monitor, but when you take the stick out of the monitor, there is a faint but very visible test line there. Am I going crazy? I feel like I know my body better than this thing and I feel like my LH surge is happening now (comparing to previous experiences). Even the two tracking apps I use says I'm in my fertile window.