Where is my period?!

Amelia
Ive been camping for over a week and experiencing most other period symptoms worse than ever for almost a week (which was when I was SUPPOSED to start my period) I'm 4 days late and experiencing symptoms I never had before, like seriously, since when do I pms. The only thing im missing right now is that blood waterfall and I kinda want it to just get here and end this hell. What could cause anything like this?