Implantation Bleeding?

Can Implantation Bleeding occur 14 days past the last time you had sex? My period is 6 days late. Today I have light, very light bleeding. Almost like curvical mucus with blood in it. As well as some light cramps on my left side. I have had nausea, sensitivity to smells, dizziness, and headaches the past 2 weeks. Just wondering if it could be implantation bleeding or just my period.