Faint +

My period was due on the 9th, I'm 5 days late. No symptoms really besides tired & cramping. Cramped the day my period was due and on and off but today I cramped more then usual, had sex (tmi) sorry had a light pink blood only when I wiped the 10 and no other bleeding. Took a test today saw the 2 white lines then both turned pink, faint positive right away then went back and the line was gone so it reads negative. So confused 😫