Sharp period pain....

Jessica
Hey gals!
I get such bad period pain for 1-2 days of my period that it hurts to sit. I have to be careful how I balance my weight sitting down as if I lean too much one way STABBING pains right up my vajootz. It feels like I'm sitting on a spear. Or BANG- spear straight through my uterus. 
Happening during a meeting at work today. Very embarrassing. 
Does this happen to anyone else? Is it normal?
(Me- ovulating okay, periods 4-5 days, cycle fluctuates between 31-34 days)