I would retest with a pink dye!

Sorry I think it's an evap line bc it doesn't have color in the pic below. But try again in a few days or the day of your missed period !

That is what mine looked like! And I'm currently 7 weeks 5 days pregnant. Ultrasound confirmed a heart beat last week. ^^This one was taken 3 days before my missed period. Go get a pink dye, they show so much more. ^^This was my first one taken 4 days before my missed period.