Implantation !?

Kayla

So my AF is due in six days, I’m roughly 8dpo. I’ve been cramping on and off the past 3 days and I just Experienced light pink discharge when I wiped. Also want to add I had similar light pink discharge once 2 days before I got a positive opk, I’m assuming it was ovulating spotting (which I have never had before). Cramping has seemed to lessen or become less noticeable since I had the spotting today. Could this be implantation or just early AF?!