2 days late... spotting (TMI WARNING)

⚠️ TMI ⚠️

I’m two days late, which never happens, and I’m spotting (which also never happens.) I never spot before going into a full blown period, and my periods always start off heavy and dark... I got a BFN today, but my mother didn’t pop positive with me until 11wks with a blood test. I’ve heard spotting in early pregnancy is common... does this look like that or the late arrival of AF?