Advice: IB at 12 DPO?

Sarah • TTC #1
Hi everyone,
I'm due for AF tomorrow and had light brown spotting yesterday with mild cramping figured AF had just come early. I've had nothing since then...I'm actively TTC (4th cycle). I'm usually very regular..,I know AF is probably coming but wanted input from others...anyone ever have light spotting at 12 DPO? How'd it turn out?