I feel like I'm going crazy!

Kayla

I am a week late for my period and had two clear negatives a day before expected period and 2 days after. I took this with FMU expecting it to be negative, but a vvvfl popped up within 3 minutes. My DH couldn't see it at first, but then he could after looking for a minute. If it is positive, shouldn't it be darker at 7 days late? Can you see the line?