AF Late !

Yari ❤ • TTC For Baby #2 Have A Beautiful Lil Boy Hoping For a Beautiful Lil Girl(:
I Am 8 DAYS late today . I had a little bit of pinkish reddish blood this morning when I wiped . So I wore a pad all day but didn't get anything else. Could this have been AF ? I'm usually 6 days with AF . I was suppose to start November 30 . Tested NOvember 27 it was Neg. And I took another one December 2 and also was Neg. Should I retest again ?