13 DPO...vanishing line?

Stacey • One boy, one girl, Two in Heaven and another on the way. Endo Warrior, Bicornuate Uterus

Hey guys. So I took a test yesterday at 13 DPO. I thought I could see a hint of something so I tweaked it and saw a line. So I took some more pics and tweaked them and the line doesn't show up. I am assuming an indent? My period is due today. Hasn't started yet but I have that yucky cranpy feeling. All pics attached. First 2 are the first ones I took