Help! Confused by my result..

Ashley

Hi all! Very new to this site but I need help. I am 6 days late today and no sign of AF. I took a Kroger brand hpt this morning and my result was confusing. A curved faint blue line appeared immediately in the test window (and I have heard the blue dye is horrible) but then it disappeared about an hour later. I will wait a couple days and do it again but I was wondering if anyone has had this happen. TIA!