do I have my period ? is it normal ?

So I'm not sure if I'm on my period or I might be prego , because on Friday & Saturday I bleed like my normal period . But then on Sunday-Tuesday (today) I've only been spotting. I always get cramps on my period & I only had cramps Friday & Saturday . I usually get my period for 5 days but this time I only bleed for 2 and I've been spitting for three . Could this mean anything ?!