TMI Possible implementation Bleeding 6DPO?

Hi, we are TTC baby # 2 and I had some light pink spotting when wiping first thing this morning. I am currently on CD22 6DPO. I started my period exactly 3 weeks ago.  I thought I read implementation is usually after 10DPO - is it too early for this to be possible implementation bleeding? Thank you for help! I didn't notice implantation bleeding with baby #1 so need some wisdom from you ladies! The TWW is so hard!!!