Although I agree with the sentiment of what everyone else has said (get yourself moved), I would go about it slightly differently - if your dorm has a counsellor / support worker / or someone similar : approach the counsellor and tell him/her what happened.
I've seen people who suffer from social anxiety, who go to a person in authority, and:
- they are very worried they won't be believed
- when it comes the crunch, their anxiety mounts, and they can't get their story straight in their own head (so they can't tell their story straight)
- they can't answer questions straight (same reason as above)
- already extremely worried about not being believed, they don't deal well with their story being either clarified or challenged well (eg she's a lovely girl - why would she do something like that?)
The end result is that such people give off a lot of signals consistent with liars, and so, despite the truth of the matter, they can at times not be believed - which can cause immense stress.
Hence why, if you are one of these types of people, approaching a counsellor (or similar person) is advisable - they are trained to listen (or are usually the best at listening). They should also have some experience dealing with people who suffer from social anxiety. And they should know how to get you moved without causing waves (with the other students) for you.