Implantation or not

Hey i m new here and totally confused about my symptoms . So my period was supposed to start tomorrow and today when i get up i wipe and see a brown pinkish discharge, then at work i check and see a black discharge having read it says it could be implantation but then i see some bleeding not bright but dark red, now i m confused if it is periods or implantation cause my periods never start this way plus they dont feel like the regular periods do and i have slight cramping in my lower abdomen, what to do help