Implantation?

Ashlee

Can implantation happen before 6dpo?

I got a positive opk the 15th so ovulated the 16th and I’m only 4dpo but having tons of cramping and creamy/wet cm today!! 🤔 never happened. before and I know implantation is typically 6-12 dpo.... anyone had these symptoms early on and got a BFP later?