Am I pregnant??? Implantation?

PLZ RESPOND, I had unprotected sex multiple times about 7 days ago & my period was not due for 11 days and last night before bed I went to the bathroom & wiped myself and noticed some light color.. I was confused wondering if I had gotten my period early? It has never happened to me before. I have had cramps, frequent urination and being extra hot lately.. I woke up and the bleeding is still going but it is more brown / dark red. Is this implantation bleeding?? Or my period early?