Weird spotting.. IB or Af?

Vic(Tori)a • Just trying to make sense of this mixed up world we live in 🩷

Hey ladies,

So af according to Glow was due to show the 17th. Well she hasn't come yet but this morning I had super light pinkish only when I wiped and only once. Is this af starting or possibly IB? Any help would be great, thanks!