12dpo, implantation bleeding possible?

Didn’t use opks so guessing I’m 12dpo due to ovulation cramps (glow said 10dpo & AF in 4 days). Is it too late for implantation? It seems really light pink when I wipe/on the panty liner. Don’t have cramps but I have sore boobs (I always get them during pms). Anyone had implantation bleeding could advise? Thanks