Can someone PLEASE interpret my dream?

just last night I had a dream I killed someone. it was one of the most horrible dream I ever had. In my dream, I was in my room and I think I was home alone. While I was in my room I started hearing noises like someone was trying to break in my house. I stepped out of my room to check who it was. I didn't see anyone. so I went back to my room. Again, I start hearing noises, I get up and go check, it turned out that someone did break into my house. Right when I get out of my room I see an African American woman walking around my house. I have never seen this woman in my life, I have no idea who she is. I'm terrified at this point so I start cursing her out and asking her what the hell she's doing. I can't remember what he says...all I remember is I walk out the back door where she broke in. she walks out the same time I walk out and at this point I arty punching, hitting, and stabbing her. eventually she dies. right away I grab a shovel and start digging a hole to bury her in. when I'm done I put her body in. when I'm done, in my dream I start freaking out and in my dream, I start remembering that I've killed many people before! which is so weird!!! I'm only 16! why did I have a dream like this!!!! then eventually I woke up....someone PLEASE help me. what does my dream mean?!?!?