What the hell do i do if there is some kind of rat in my room?!?!

[gogs67]

[img width=700 height=466]http://www.clemson.edu/cef/bat%20and%20mammal%20%20images/oldfield%20mouse.jpg[/img]

Here's a pic of what it looked like....
I just don't know what to do anymore

Thats a mouse!Ya big girl!