How early do signs of implantation occur after sex?

Question

Can they happen within the same day of having sex? I had tints of pink in my underwear this evening after having sex this morning. Is it just from having sex or could it be implantation? I'm sorry if this is a stupid question but Google doesn't answer my question very well so I thought I would ask you all. Thanks a lot for your help!

Answer

From 6-12 dpo

Answer

I had textbook implantation bleeding. 9dpo, so much I though my period was early. Took a test for fun on 10dpo and got my
First vfl

How early do signs of implantation occur after sex?

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