Pregnancy symptom?

I am 3 days late ( not getting my hopes up just yet) and I've had cramps for the past two days at random times. Normally I only have cramps the night before or first day of my period. Wishful thinking or could this be it?!?! I'm thinking I will give it one more day and then take a test? So far no sign of my period, not even the slightest spotting. I am pretty on schedule every month.