Is this my period or what?

I am or was on a 60 out of a usually 37 cycle , until a couple of hours ago i think , I started spotting (barely ) though mostly when I wipe is when I know I'm spotting , an barely in my urine , anyways when I started spotting I also started having cramps all from my pelvic to my stomach an up until now I'm cramping , my breast have also started to hurt on the sides , an some nausea , any advice?