This all started when I began to stay alone in my house (I was about 12). I would be alone in the house and I would be doing something when I would see things from the corner of my eye and I would hear things constantly. An example of seeing things would be things such as light or a shadow sort of passing me, but being gone when I would really look for it. My dog and cats would follow things with their eyes and the dog wags her tail while supposedly starring off into space.
I never really thought much of it until one day I was alone watching t.v. while sitting near a coffee table and a plastic spoon hit me (I had a bunch of them sitting on the coffee table at the time for one reason or another). That's when I knew something was here.
Once when I was younger, I was walking to my bedroom at night and saw what appeared to be a person or large dog (it was a black shape) curled up on my mother's bed. Recently, (I'm 16 now) I've been seeing things and hearing things more often and I'm not the only one. My boyfriend was walking into my room and when he got to my bed, he looked towards the door and saw a dark shadowy figure of a man standing there. I was there but I didn't bother to look because I have seen things like that when I was younger IN my room. It has not been inside my room since I have been shutting the door at night. My mother recently was in her bedroom and saw what she thought was the dog but when she turned to look it wasn't there and our dog was downstairs.
I hear cars and things driving by my house or pulling in the driveway almost everyday (me and my mother live close to the road where there isn't exactly a load of traffic) and we have these big windows facing the road so I would see if anything was there and half the time it's "nothing".
Personally I believe that the raised activity is because of the work that was just done to a part of the house (near the side door). We had the floor torn up and had a new one put in. Another theory I have as to why I see things all the time is because when I was around 12 and 13 me and some friends would play with a Ouija board at my friend's houses (he lived at his grandmothers and then with his mother and stepfather and currently with his father).
I agree with Shane. Being Wiccan has nothing to do with experiences with the Unknown. It only means that you may have a better working knowledge of the "natural" things in life and how to respect them more than some others may.
The Ouija may have opened the door, but I also think the renovation has a lot to do with it. Ghosts tend to get a bit disturbed when you start to "tear up" their home.
When the experiences get too creepy for you, I would pray to the Goddess and ask for a fear block. Whatever you feel that would take your mind off of the fear and onto that something else. Fear tends to feed ghosts, and we would not want anything (like the plastic ware) to harm you.