This is similar with me, but its been for about 3 days. Im 14, my period was 2 weeks ago and im a virgin. Im honestly worried what it could be. Ive looked everywhere but almost all the answers are STD's or pregnancy which isnt possible.
If it is brown then it could be old blood... Have you had unprotected sex? It could be possible that it is implantation bleeding but it seems that it might be a little early for that. If you are on birth control it could be break through bleeding... It could also be that you are pregnant. Have you taken a home pregnancy test to rule out pregnancy?