The cramping that i am having is not constant it comes and goes. I have been feeling very tired this past week, my breast are a little sore. And i get dizzy at times, and a little nauseous. The first day of my last period was on 05/22/09, and i have always had a regular period. My periods always last 3 days. I had intercourse on June 2,4,9, 12, & 18.