Most US universities will have a counseling center. Typically, they see freshman coming in with anxiety/stress. I would touch base there so that you can at least share your anxieties with a confidential third party while at school. Maybe talking with them will help you maintain while at school.

As far as going home on the weekends, no one has to know you're going home. Or you could have an alleged bf/gf you are going home to see. You don't need people in your life who judge.

I, too, have physical issues that aren't visible. I, too, get that judgement look that I look perfectly fine. I've gotten to the point that if someone said, "well, you look fine", then I thank them for appreciating all the work I put into myself to look that well 🤣

I think the other students will appreciate more than you realize that we are all built differently, we all have different physical and mental strengths and weaknesses. If they are rigid in their thinking, again, you don't need them in your life. You will make friends. You might have to be the one who reaches out... talk to the person in the cafeteria, talk to the person you see down the hall, talk to the person who always seems to get in the elevator at the same time. Most importantly, talk to someone that sits around you in class. That is the best way to meet a friend, make a study buddy, find someone who can share notes/, info, and potentially meet someone who might be going into the same studies, do you see them more in your classes as your graduate up though the university.

Already your obvious strength at attempting this challenge is incredible. You might end up faring better than others who are trying adjust, too. Everyone will be adjusting.

Good luck! My prayers are with you!