One week past AF

I am getting frustrated.. I am a week past my expected AF. Never off by more than a day. But I have taken 3 tests. One the day after I missed, then 2 days after that, both showing negative. Today is day 7 and I took another. Can't tell if I am seeing a very faint line this time or not.. I think I am hoping too much for it to be. Now I understand what people mean they say that have lines eyes.. Been ttc since October when I took out the Mirena.