Bright red blood after sex?? (May be TMI)

Elsa • ✨8/22/15✨
So me and my bf just finished having sex and i went to the bathroom after and theres bright red blood coming out of my vagina. It felt like he had cut my outer labia while fingering me but it's definitely coming from inside. Im on the Nexplanon implant. Help ??? Im freaking out right now