Implantation bleeding?

Hi guys I'm 8dpo today and I had small amount of brown spotting yesterday then again today. My period isn't due until next Wednesday and I usually start spotting about 3 days before my period. I also have been having really bad cramps, indigestion and nausea. I usually don't cramp until about 1 or 2 days before my period. I did wake up yesterday with a cold as well and decreased appetite. Could my bleeding be implantation or very early start to af??