Positive test yesterday morning . Negative digital test tonight

tarin

Hi all first time not preventing and just been feeling off the last week. Yesterday Morning I tested it with first morning urine and got a positive period on 12dpo. I was going to wait till tomorrow morning but curiosity got the best of me. Period expected tomorrow but not sure as i dont feel any precramps.I was pretty shocked by the positive yesterday, but I'm not sure anymore.

Could the blue line test be just a dye stealer?