Am I pregnant?

Ladies! I need ur opinion.. so, me and my boyfriend had sex on sept 2nd.. yes I was still on my cycle.. but I thought I was off cus I stop bleeding for a while so we did the doo😩.. but he ended up knocking it back down heavily.. but, we used the pull out method then. I know it always isn’t safe.. fast forward to yesterday, I woke up bleeding.. and it STOPPED. Fresh RED blood.., then it was like light brownish after that. now my period isn’t due for another 3 days.. we haven’t had sex since September 2nd so none in between? Could this be implantation? Cus this be it?! 😩 what do u think my chances are?!