I got my period for 7 days, then it stopped, but i started bleeding again&now my pee is brown&black stuff is coming out my vagina. what does it mean?

See your gynecologis: I do not know enough about you to answer that question. It sounds like you are on a birth control pill and breakthrough bleeding is common, especially if you missed a pill. You could also be pregnant so i would do a test. Your urine can change color depending on the concentration and what you eat. I would get an appointment with your gynecologist to change your pill.