Do I Have A Special Power?

Ever since I was really little I have been seeing and hearing ghosts. I have seen ghosts staring at me in my closet, I can tell when they are around me, and every house I have moved to someone has always been there. I see either their whole body, just parts of their body, I see orbs, or nothing I can just sense them. I am not sure if the orbs are demotic entities or angels. I would appreciate if you could conclude this information. I can sometimes at night hear them doing something that sounds like the dishes. I am minding my own business and all of a sudden sharp pains go through my chest or something good happens to me. I can feel when they're around me. I sometimes feel threatened like they want to hurt me. Just recently I was in my room and I turned my music up really loud. I felt pain in my chest and felt someone with me, it felt as if someone was mad. I have a picture my mom took of the family and by my head you can see a head just staring at me. You can't see a face, but you can't tell it's a head. They have played games with me and they have helped me. They follow me everywhere I go. When I am at school or the store I can sense them around. They even call my name sometimes. I am the only one who experiences the such happenings. My mom won't believe me so I am just asking for someone else's opinion. I don't know what I am, but by a few people I have been called a medium. If I am a medium I don't know how to help the spirit. I would really appreciate it if someone could possibly help. Thank you.