11dpo implantation bleeding?

Is it too late for implantation bleeding at 11dpo? I recieved a positive opk 12 days ago
So il be around 11dpo today unless if i ovulated a day late maybe prehaps even 10dpo atm, but being according to 11dpo is that to late for IB?? (TMI) I got pink stain kind of a thing when i wiped and when i wiped second time a light fadey kind of brown on toilet paper??? 

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