menstrual cycles off

Misty

my period is usually 3 days long and I am usually 30 day cycle never under never over but last month was only 2 days with a 28 day cycle and this last cycle was 28 days with 24 hrs of bleeding yesterday I started to bleed then today I spotted now I am done hmmmm.....anyone else have this happen..... were you pregnant? hormones off? or period just whacked?