Faint line disappeared?

Rosca

Hi, yesterday 11Dpo I’ve got a BFN, today 12Dpo with FMU and a few mins back, on both tests there was a faint line, it had color it was there I got all excited, after the time frame, in 3 minutes it disappeared :/

Has anyone experienced this? What did it turned out? Af supposed to arrive in 2 days