Dream Works IV

So at the end of last year i took a Meaning of Dreams class. I loved it. I have always felt that God speaks to us in different ways and dreams are the most vivid way to receive messages from Him. Its the only time im quiet enough to listen. In the class we talked about how dreaming of a house, especially your house symbolizes your being. Attics represent thoughts or ideas. Front door future, back door past, front yard is public life, ect, ect, ect......
So two nights ago i dreamt of my apartment.
I had gotten out of my car and realized there was a man trying to break into the back door. I stood there watching him for a minute as he broke down the door. He finally realized that i was there and walked away from the apartment. I slowly walked in trying to find out what was going on. When i took my first step in I realized i the layout was different from my place but i still felt that it was my home. I looked into one bedroom and noticed that all the windows were open and the shades were not on. I close the windows and lock them. Then pulled the curtains close to keep people from looking into the house. I slowly go into each room, closing then locking each window that was wide open before. Then I close the curtains shut. As I move around the house i notice that the back door is knocked off the hinges and i cant figure out how to shut the door. As i try to think of a way to close up i notice the guy who broke the door down just standing and staring at me. Staring into the house.
Then i wake up. No solution, and the back door remained open.

So now im left to wonder what it means. If its something or someone from my past does it connect with me seeing my ex the other night? Is he the one trying to bring back things from my past?