The thump or jump?

I was sitting here on my computer as I do everynight and a very big thump or jump happened and it rattled our knick knacks and sounded like it moved the knick knack shelf, heard the sound of it going back to the floor. I do not know where it came from, but there are only two options because I also felt it. It either came in the form of a very heavy & loud jump from our bedroom, which is directly above the room I am in or it came from the basement in the form of a thump, which is directly below the room I am in. As I am sitting here typing in the blog I just had another possible area it may have came from, maybe from the room I am in now(playroom). All I know for sure it was loud & heavy,rattled the knick knacks and sounded like it moved(lifted) the knick knack stand and left it drop, it shook thw whole room and I felt & heard it.