Home for break, and without a bedroom?

<p>I am the oldest of five kids. Before going to college I had my own bedroom, but my siblings all shuffled around their bedrooms while I was gone so that they all have their own now. Now I'm home for winter break, yet I'm feeling like a stranger in my own house.
My dad keeps telling me to act like a good guest. I'm sleeping on a futon in my sisters room. She's angry because she says my suitcase looks messy. I cleared off a few shelves in the bathroom and intend to use that to place my stuff, but I still feel out of place. My dad keeps saying that I don't live here anymore, so why would I expect so much space? I just feel frustrated now. My sister keeps telling me to respect her room, not touch her stuff (ie her bed and her desk and her tv) What should I do? Sure I have a place to sleep and I'm working on a place to put my stuff. But I still feel unwelcome. Am I jus acting like a spoiled brat? What should I do?</p>