I woke up and looked out the window to see a silver craft that made no noise at all

I had driven with my mother who worked for the post office and left very early in the morning to see a friend who lived close by where she worked.It was to early to take the bus the rest of the way to her house,so I laid in the van and went to sleep.All I remember was waking up and seeing a silver disk hovering above a house across the street.It made no noise at all.The next thing I remember was getting out the van.I didnt even remember this till years later.This is in the same neighborhood where as a child I had dreams of things standing outside of my bedroom window(they reminded me of,this may sound crazy,but of insects only standing upright and acting as a human would and I was very scared.As I got older I still had vivid memories of these things and wondered if they were really dreams at all.I have only had bits and pieces of memories of seeing that craft,but I remember now that there were people standing around me as I sat in some type of silver cold chair,I also seem to have burned in my mind that they told me they would be back and not to be afraid.It is very hard to explain this because everything is so fragmented.It is very hard to put into words.
Date is approximate.  PD