Negative/No AF

I’m 2 days late which is pretty unusual for me.. the days leading up to when I was suppose to get my period I was having some bad cramping/sore boobs (which I don’t typically get either) so I totally thought AF was coming. The cramping has stopped but my boobs are still so sore!! I tested the day I was suppose to get AF which is the picture down below. How long should I wait to retest if it doesn’t come/is there still a chance i could get a positive after getting a negative day of AF!