Period question?

Af was due 11/20

11/21 until now I have brown spotting when I wipe. None comes out just when I wipe. Just in the morning is it light pink/red. After that it's brown throughout the day and then nothing. Its so light I haven't even needed a pad or tampon. I'm just having a hard time believing it's my period since there isn't actually any flowing blood.

Anyone have this and get a BFP?

Tested a few days ago and got a bfn. Is this Af?