Could i be pregnant?

I am scared because i think i might be pregnant!
My period is six days late and my period is not here yet. On February 20 it was my first day of my last  period. Now is March 25 and my period still hasn't arrived. Could i be pregnant or not? I am felling sick and very sleepy and tire. When i go to the bathroom i want to pop but nothing happens or either way when i want to pee i just pee a little and then i can't pee.. Recently i have been having strong cramps inside my vigina and i also feel blowed it.