Implantation Bleeding?

Haley

I ended my period 2 weeks ago and have been having bad period like cramps and pink spotting for a little over a week now, could this be implantation or something more serious like a cyst rupturing ? I've never had this happen before. My last cycle I was over a week late for the first time ever and when I got af it was heavier and longer then normal. Could it be a miscarriage maybe?