I Think I Am Being Followed By A Spirit

I need to know if I am being followed by a spirit, and if I am what can I do about it? I have always been sensitive to spirits, I know when one is around, I can usually tell if it is an evil spirit, demon or someone just stuck here and occasionally I receive messages from them in detail.

A few years ago some friends of mine were using a Ouija board in my house. I have had an uneasy feeling and the feeling of being constantly watched since then. I did not use it but I was watching and the spirit told my friends it would not say anything until I left the room because I was too loud (I was not saying anything just quietly watching) after they were finished playing with it they wiped it down and gave it back to its owner.

That night things began happening in my apartment, we would here footsteps that led from the kitchen to the living room and back, one night I was laying in bed and my stereo turned all the way up then down then off and I felt something sit on my bed and say "there now that's better". I came home one day after work to find all my Christmas decorations on the floor and a solid metal Menorah snapped in half, a few more things happened before my roomate and I (mostly my idea) decided to have the apartment blessed. The blessing worked as far as the inside of the house went nothing else happened except at night we would hear from outside screaming that I cannot place my finger on what it was. It was not like any animal or human scream I have ever heard and I would also hear someone saying to me "let me back in, only you can, let me in NOW!"

Eventually I moved in with my sister and that is when things began to happen again.

I would hear the same voice over and over again, one night something was scratching the underside of my bed and it got so loud I had my brother in-law come in and flip my bed so I could look for what it was that was making the scratching, there was nothing I looked in every box searched the boxsping for holes thinking maybe there was a mouse in side something and nope nothing. I then moved back home when, I left her house nothing else happened to her however I have become even more uneased. More noises have been happening and more of my things have been moving and at night. When I am not fully asleep I feel something choking me and I try and try to scream for my mother but I can't nothing comes out until right before I feel like I am about to black out then my voice starts to come out little by little and eventually I am able to call her. I started sleeping in the living room where my mother sleeps so when this happens I can just reach out for her so it ends quickly.

My sister has since moved and I am staying with her for a bit. Nothing was ever in her house before I started staying here even when I visited I did not feel anything here, but now that I have been here for a few weeks things have been happening again and I again feel like I am constantly being watched and feel very uneasy. It started with a banging noise one night in the spare room where I am sleeping, the noise woke me up and got louder and more constant until I sat up and acknowledged that I heard it then it stopped until the next night, I have been hearing footsteps when I am the only one home my sister has too, mostly little things have been happening though getting more and more frequent, then this morning after my sister and her husband left for work, I got up to use the bathroom and I heard a banging coming from the far corner of the room again I tried to ignore it and it only got closer and louder. My sisters cat has been frantically running around the living room with her fur poofed out and she will not stop crying, doors keep slamming shut but when I go to investigate all the doors are as they were when I last checked them, when I went to get a dish out of a cabinet the cabinet door was forced out of my hand and shut it also sounds like someone is going up and down the stairs constantly.

It seems to me whenever I really start to acknowledge its presence and talk about it that the spirit or whatever it is gets stronger and more things happen. I am a very spiritual person and ask God almost everyday for protection for myself, my family and my home against any beings that mean to do harm however, this doesn't seem to be helping. Can I please have some feedback on one, am I being followed by this spirit/demon, two, what is it and three, what can I do about it before it starts choking me again.