3 days late for AF

so according to glow my AF was going to show her ugly face 3 days ago. still nothing. another app says today. this has happened in the past...I test and the next day AF shows up. I'm trying not to think about it so I won't test till June 5 so I'm pretty much two weeks late. any one in the same boat to talk to till our test dates???or anyone have tips to get through the days....