This has happened before! Like, it doesn't always happen, but I have had moments where I think "Wait... Deja Vu!" And then I think about when it was, until I finally remember that it was a dream the first time!
I once had this dream in which I was so happy. I was so happy and everything felt great inside of me. When I woke up, I cried and cried because I hated the reality of my actual life. Thankfully, I haven't experienced that again since I left my abuser.