No af

Af due today... i have no symptoms I normal get very bad cramps but I have had non upto now. I can normally pinpoint within the hour when I'm gonna come on. I feel nothing! I did a a test 4 days ago and it was negative.. maybe it was too early... I'm going to get a test tonight and do it in the morning if she doesn't show. I have no pregnancy symptoms either so not sure what's happening yet