IB or AF?

Nora

Hey y’all so 4 days before my expected period I had light spotting.

Today which is one day before expected period I had more (I believe) but it was soooo light. I almost missed it.

Is it possible it could be IB?

How long after I stop spotting if I don’t get AF should I wait to test?

This was 4 days before EXPECTED AF