AF no show but...

Sheena • Mommy of a daughter 4.5.10 & son 11.3.18
Two days ago I took a test I got a BFN, today my AF is due, but she's a no show so far. AF is never late, if anything she comes a few days early or just on time... Idk what to think or do... The test I took was a digital clear blue, but it was only two days before I was due... Four days prior I started getting sore boobs, by today they barely even ache, wth is going on w my body?! Ugh