Imagining you’re a fake character in your everyday life?

Hello. At this point I am about 80% sure that I have MDD, but I wanted to ask about something that I literally can’t find anywhere else.

While I’m going back my life (driving, walking to class, at work, in class, etc), I always imagine myself as character of one of my favorite movies, books, tv shows, etc. I imagine I’m them and usually I imagine other characters of the series watching them from a distance, confused on why they (me) are acting so “normal”.

ex: I often will imagine I’m Harry Potter, driving and going to uni at a muggle university and imagining Hermione and Ron watching like “why tf is he doing that?”

this is obviously lowkey super embarrassing to admit, and i’ll probably delete this, but i was just wondering if this is a normal thing for MDD? Or if I’m crazy crazy and need to go see someone like a psychiatrist?