Period is 2 days late. Is this common?

Bethany
I've had what feel like menstrual cramps for a week or so, so I assumed my dreaded af would come. It was supposed to come yesterday but it didn't. Usually my cycles are very regular with 30 cycle days and 5 period days. Has this ever happened to you ladies or is this common? I really want to take a test but I told myself that I'd wait for af this time. : (