Need help!! Tmi

So yesterday was last day of my period, and I went early this morning to the bathroom to pee and everything was normal no spotting or anything, but later on i went again and when i wipe myself there was like brown and just a tiny of discharge it didn't look like blood this has never happen to me and I worry what it can be, me and husband did had sex yesterday on my last day of period, but like I've said this morning was normal then after that's when I seen brown spotting, can anyone tell me there opinions please!!