Light cramping that comes and goes, but still no period??

Veronica • Mom to 2 boys
AF was supose to start yesterday and for the last few days I've been having on and off light cramping that comes and goes every few seconds nothing constant like what a normal period brings you. Today is day 2 and still no period so idk what to think.. Gas anyone gone thru this with light on and off cramping but was actually pregnant?