I think you are doing better than you realize. As the above posters have articulated, everything you are feeling is normal. Try to focus on what you have accomplished in the six weeks you’ve been there. I think the fact you get along with your roommate in the room is a great start.
The only thing I have to add is to just be comfortable in your own skin. Focus on what you do like, be friendly, smile, be helpful to others and I think you will feel differently by semester’s end.