I think it's the trigger Scuba, I didn't initially even see a 2nd line until the next day when I looked at the tests in daylight, they'd darkened overnight. And I know the tests are pretty much invalid after about 10 mins. The first test looks the darkest at the moment and I took it Thursday, or 10 days post trigger. It's a frer so I'm not believing anything else but that it's the trigger still. Test this morning was fainter but I can just see a shadow of a line.