Period??? Where are you??

Question for all of you,

So, I track my period with this app because BC sucks. It hates me and I hate it...I have tried different ones and gave them all the 3 month old college try and can’t do it. They just make me feel awful. Anyway, this month I was supposed to start on the 24th and I have been PMSing since I guess after ovulation—not totally abnormal for me as I sometimes do this. Well today is Jan. 27th and NOTHING! Yesterday, I took 2 pregnancy tests and both were negative. Just wanted to rule that out. Should I wait until I am a week late and test again or should I just chalk it up to an anovulatory cycle and pray that my PMS goes away and hope my period shows up next month?

Has anyone experienced this? I have had this happen probably four months ago...I usually only do this once in a blue moon...what is going on? I’m usually so regular like clockwork.