I'm 13 years old, and want my bedroom back!?

This belongs in Family rather than Marriage & Divorce...

...and many families now have extended members living with them...if you have an issue with the sleeping arrangements, speak to your parents...if the aunt is living there and paying rent or contributing to the upkeep of the household, they are not likely to make her sleep on the sofa (esp if she's going to be there a while)...

I understand it's crummy to have your room taken away, but you didn't really explain to us why your cousins lived there, or why your aunt lives there, or where you are currently sleeping (what is the bedroom situation in the home)...so it's hard to give good answers when we don't really know what's going on or why...

Talk to your mom about how hard it's been on you not having your own personal space. That you understand that your aunt and cousins need help with a place to live but that they can't be living in your room forever. Make sure that when you confront your mom that you're not raising your voice or getting attitude in there. The more mature that you act about it and the more you show your mom that you are genuinely upset about it and not just being whiney, then she may try to figure out a different plan for your aunt.

You ARE a normal teenager and this IS a normal life for your situation.

Get to school, get an education and get some real job skills. Then you can move out, get a job and get your OWN place that NOBODY else ill live in but you.

You need to talk to your mother about the situation. Not fair to you at all - your aunt and cousins need to find another place to live.

Talk to your parents, she's not going to listen to you. Explain why it's important to have your room back and ideally offer a reasonable comprimise. That's all you can do, as frustrating as it is, this decision is out of your hands.