I'm in college too and I get a lot of the same worries during the school year, and I have a few comments. One, please understand that your new symptoms are caused by anxiety rather than actual physical damage. I know that's tough, and it certainly doesn't mean that they're any less real, but they will go away when you're able to relax and stop thinking about them. Secondly, one thing that's helped me is wearing a hat when I'm going to be in an environment where I know people will want to hug me. I know it sounds odd, but mentally it makes me feel safer, like I'm wearing a helmet. Plus, if you wear a hat with a brim people who are hugging you will move away from your head because they won't want the brim to hit them.

Hope this helps. Stay strong