I'm curious..

Sierra

So I just got off my period Sunday the 16th. I waited 3days after to have sex. Had unprotected sex with my boyfriend yesterday ( Wednesday) in the shower (2 rounds). After we were finished he washed off & hopped out. Same with me except I noticed bright red blood from down there . ( my period was 7days long ). Every time I use the bathroom & wipe it still this bright red blood. Does anyone have an idea of why my body is doing this ?