I assume you mean the while sleeping kind of dreams. In my experience these dreams are more of a reflection of things you've been though than of who you are, what you want, etc. Living in an opposite body is certainly a traumatic experience, so it's not surprising to me that it is reflected in dreams. I'm always telling my therapist about terrible or simply very strange dreams that I have. I've had dreams where I'm me, where I'm not me, and where I'm some kind of outside observer like watching a movie, though it's probably more like the Star Trek holodeck.
What exactly is your worry about it? I'm no psychologist but I've spent plenty of time analyzing my own strange dream experiences.
