I would not be to afraid, it is probably a good spirit entity, otherwise you would have noticed stranger things going on. My grandfather passed away when I was a teenager, and he used to sit on my grandmothers bed on the corner every night before she went to sleep, I seen it happen many times. One time she had a neighbor lady watch the house over the weekend, and the lady laid down in my grandmothers bed, and then my grandfather sat down on the corner, and scared the heck out of her, every once in awhile she would watch the house for my grandmother, and she said she just got used to him being there, but would not sleep in my grandmothers bed anymore. Also after my father passed away, (he used to like playing practical jokes on us), the day after the funeral, my nephews were over visiting, and the water turned on in the bathroom sink, then the lights went on and off, and they ran out of the house screaming. I laughed so hard, I almost cried, I then acknowledged my father, and the water turned off, and the lights quit flickering. I told my nephews what was going on, and they soon calmed down, and came back in the house. Anyway, that is the good experiences I have had with spirit entities. I hope everything turns out okay for you on that.