Went back into house where I saw first apparition

I saw my full apparition when I was 5 years old and I think now today as an
adult it was a demon. I saw that my grandparents home was for sale where I saw this thing and made an appointment with the Realtor and went back into the house and took pictures.
I had to know if it was real or not and I got some pictures in the day inside the house both times I went and I know now that it was not a child's fear. The Realtor was a Skeptic when he met me and took me through the house and I was honest with him why I was there and a full blown skeptic in this grown man just doing his job walked away a true believer and even asked if he could go on an investigation with our group.
I have those pictures posted on our Paranormal Group Website.
This was in Oct. of 2008 and since then I have been getting deep scratches on my legs and I am not feeling this when it is happening and I cannot understand why this can happen and I am not even aware of it until I see it.
I have also had 2 very recent experiences along with the scratches and twice have found teeth marks inside my upper thigh and never felt that either. They are teeth marks that look like two piercings that at deep and do have blood on my thigh. This has happened twice plus the deep scratches on my shin area of the same leg that has the bites.
All seem to heal quickly and cause no pain. This is in our home which we do know that we have several Spirits of adults and children but I don't know if I brought something home with me from my Grandparents house in Oct..
Could use some help to figure this out please.