Started testing at 10dpo (Tuesday 17th) and saw faint lines for the first time. I Tested day & night and the faint lines showed up everytime within the timeframe. I also used a more reliable brand, clear blue and again I got a faint positive. I’m now 13dpo and AF is due tomorrow. But as I tested this morning the lines seem fainter not really sure what’s going on as I would expect lines to darken now. Can anyone help?