3 days late... But BFN?

Hey guys!

So I recently had my IUD removed - right after my last period ended. I’ve always been super regular (and only missed a period when I was pregnant with my first baby).

I’m currently 3 days late, but all my tests are still negative. Thoughts? Could it be a late positive? Or late because of my IUD removal? (I maintained a regular period throughout my 3 years of having an IUD)

Thanks ladies!