Implantation pain/bleeding?

Marissa • Mommy to H (10.2017) and L (08.2019)
I am 8dpo and today I had very light pinkish spotting as well as slight cramping, but AF isn't supposed to be here til Wednesday next week. Could this be implantation? My husband and I are new to this as we've only been trying since September so I have no idea!