I was home alone, and I started freaking out thinking people were watching me; I saw a shadow person and I was scared then very angry so I searched my whole house to see if someone was playing a joke on me, but no one was here but me. So I went to my room and heard a noise so I shut my door waiting, but I felt like a presence was outside my door. I pushed my couch infront of my door and was mumbling under my breath "they can't get me now." Over and over again. Is this paranoia or something?