So Thursday I was bleeding and I thought it was because my boyfriend  fingered me rough but today I came back from with my boyfriend we don't do anything sexual but him kissing on my neck and I came back home thinking I was going to pleasure myself and I go to put my hand down there and there's all of this blood ! now the blood on Thursday was regular blood color .. today it was a brownish red color but it was a lot ! What could be wrong? It's not my period so what is it ? and I notice that I started bleeding when I was horny or "aroused" .. So what could it be ?