Stop wallowing. Really, you are just ruining your own life. If you ever snap out of this and move on, you will look back and kick yourself for wasting so much of you youth on it. Seriously, you will. You don't have any problems that can't be solved. I'm middleaged, and I am giving you good practical advice.
I used to be painfully shy as a kid, but I found my element when I got OUT of my stupid small town of dumb jocks and cheerleaders and highschooler's drama, and got into the city and engineering and a corporation where people have something far more important to do than form bumpkin cliques and nitpick over trivia, haha.
Actually I do know all about high anxiety, because I went all the way into PTSD and paranoia and extreme fear and being afraid to drive or walk or go anywhere while going through my divorce. (Not that it stopped me. I just did it but was scared half out of my mind the entire time.) It didn't help, either, that the ex and his family had access to AT&T telco equipment, my phones were tapped illegally, my home was bugged, and I was being GPS-tracked via cellphone. Finally law enforcement had to tell them to cease and desist or go to jail. AND I weaned myself off of Xanax, without any help whatsoever. And if you've ever been on that long term, you know that the rebound anxiety from going off of it has to be kept on a very short leash and not allowed to drive you back to taking Xanax.
How do you handle anxiety and fear? You stuff the emotion down, you stop being a baby, you become a hardazz, you grow up, and you go out and get something accomplished. It's really that simple. Doctors and behavioral therapists don't always give advice like that, because if everyone who needs help gets well, the doctors and therapists have to round up new clients to pay the bills. Your roommates and the adults are probably acting weird toward you because you are failing to make the transition from teen to adult.
I am not a fan of the Catholic church and its role for women, but one thing they do understand very well is the concept of duty, and how you do not let your emotions rule you. Like, you don't always get to do what you LIKE, and life may and will be very unpleasant at times, but you suck it up and do what has to be done.
Master that ability, and you will be a free woman.
I wish you all the best.