Holding knife against myself?!

Date: 9/28/2016

So I dreamt I was in my house holding a knife against myself and something was pushing it against me but nothing was there. I was trying to push the knife away from my body but the force of whatever invisible thing was there was pushing against me. It was like I was possessed and something inside me was trying to harm me. Also I'm not depressed or anything I've got quite a happy life. Does anyone know what this could mean?