Help!

So yesturday me and my soon to be hubby had unprotected sex and yes he came inside me ! And today as i go to the bathroom and pee i feel as if something was coming out, as i clean myself i realize i was right. A very light brownish color came out from me, and looked a tad different than the brown period blood. my period had stopped this thursday and had light brown blood on fri and half of sat. Im wondering what it could be ? I doubt its implantation, but could it or is it my ovulation? Any help/advice would be great thanks!