Whoops, Again?

so i’ve literally had my period 9 days ago, and for some reason i’ve been kinda bleeding brown. more like spotting. yes i had sex after my period, no i do not use any birth control because i am against it. my husband uses the pull out method. i just want to know if the brown bleeding/spotting means implantation 😭. i also have a one year old and i don’t recall implantation, just missed my period.. thats how i knew. and to add we had sex during my fertile window.