Period or ib

I'm due my period in 5 days however today there was light pink /red patch in my pants so I put a pad on and only q tiny bit of brown leaked I put a bit of toilet roll up there and I pulled it out and it was red but nothings coming out . 5 days ago I fooled around with my bf but we never has sex . Is this just an early period or implant bleeding? I've also been having cramps and sore breasts x