Is it normal that my bed rocks and wakes me up?

I know this question is kind of vague. Yes, I looked at other posts before posting this, but none really fit or were similar to my situation. So recently I've been waking up in the middle of the night to the feeling of my bed rocking side to side. It's actually kind of frightening. Now, I should mention that I am a practicing Wiccan and my family is very spiritual, so I do believe that it could be a malevolent spirit, or something else along those lines. But before I jumped to that conclusion, I wanted to see if it was normal to feel this or if other people have had this issue.

Thank you for reading and commenting!!!

Edit - I am also very very sure that it is not a dream, I live no where near any train tracks, I live on a dead end road in a trailer park so there's no way a car could go fast enough to make anything move.