Dreams&Nightmares

I have a theory that the dreams are related to how the brain sorts and stores information you learned during a day.So when you learn/see a lot of new things, you have more dreams in night.This makes me happy when I have a dream - it means I did not wasted the previous day completely.
Since changing the place where you live exposes you to a lot of new things, it was no big surprise to me that first couple of nights I had a lot of dreams. Still,I have a lot - so far no surprise.
What is beginning driving me crazy is that I keep having a nightmare. It is not the same nightmare over and over again, as it often happens, but it always a different one with the same topic!
The topic is that I flew back to CR after about a month here. Then I'm in CR, wondering why I wasted so much time (and money) on completely pointless trip back?
I'm not sure what this recurring nightmare is trying to say. Either I love it here and I don't want to go back, or I hate it here and I want to go back. On the conscious level, I don't feel either way, so I really cannot tell.