Writing: Fun and Confusing at the Same Time

I love to write stories, but sometimes my ideas can be cryptic. Like I have an idea for a story about me and a friend, but I can't figure out where it came from. For example, a very good friend is going to UC Berkeley in two weeks, and I dreamed about us last night. I couldn't figure out where that came from other than my subconscious telling me that I'll really miss him. Another example is that I dreamed about my being pregnant with a friend's baby, and I had written the beginnings of that story the day before! The mind works in mysterious ways. Even Sigmund Freud couldn't completely describe how the brain functions! And who knows why I still periodically get ideas that put me and my ex together again!