Are You A Maladaptive Daydreamer?
DISCLAIMER: I am not an actual doctor of any kind, and I am basing it off of my own symptoms and what I've read, so it will probably not be super accurate. This might help some things you do make sense [before, I thought I was the only one who did these sorts of things]
Maladaptive daydreaming is a mental illness (or mental issue or whatever) where the person daydreams a lot. They might walk in circles/walk around their room, lost in thought; have multiple different daydream storylines going at the same time; use music as daydream background/setting the mood in the daydream; and/or having this really long story daydream. (Note: there may be other symptoms I don't know about)