Implantation? Help!

Christina

So AF is due on Sunday (4/15) but I can’t tell if this is implantation or what. The first picture is what I got at 9:00 this past Sunday morning when I first got up, the second is what happened a few moments ago. My first and only pregnancy was 6 years ago and ectopic so nothing about it was normal and I have nothing to compare it to or go off of. Does anyone think this could be a sign of pregnancy? I don’t want to take a test yet (1–if it’s too early I’ll be bummed over a negative & 2–when I had the ectopic I had 3 false negatives when I was really 6 weeks along). Help!