Came off contraceptive pill & awaiting first natural period, I was due around 3 days ago (if I was on my pill, as this is only knowledge I have so far) & have not yet had any signs of it coming. Took 2 ultra early clear blue tests & within 15 minutes there was no lines, I left the tests on the side & went back around 1-2 hours later to see these lines. Would you say these are Evap lines? I had no idea the tests did this nor the 15 min rule to discard after the 15 min window but it’s got me thinking I could be.. I have no time frame to work on as I have no idea when my first period is planning on happening, then I just have these two tests with thin lines on after the time indicator. I did a digital test which said ‘not pregnant’ too. Any advice appreciated! TIA