You definitely have talked yourself into an anxiety problem, worrying about something obsessively you don't have and that you appear to know the cause of, which is guilt and worry over things you did and where you're living. There is a difference between being nervous about something real that is a problem, such as living where you're living and living how you're living endangering that status. But you can change the behavior if it's that much of a concern for you, and apparently you can also move if you don't like the rules of the very oppressive country you've chosen to live in as if you need a visa you're not a native. But choices do make worry for folks. So the first question would be, given you know you have anxiety and know you don't have HIV, what have you done to try to treat the anxiety? Therapy? Anything? As to your current physiological symptoms, it's impossible for anyone including a doctor to know if physical problems are due to anxiety or not. It gets attributed to that when no other cause can be found, assuming your doctors are good enough and thorough enough to look at everything it might be. But that makes it impossible for anyone here to know if your symptoms are caused by anxiety or not. They don't sound like anxiety symptoms, but they do sound like symptoms some depressed people get. Your drinking isn't helping anything, as it will tend to increase disorientation and therefore anxiety at times and if you have talked yourself into depression it will make that worse. Most alcoholics are thought by many to be suffering from depression and treating it with alcohol, is that you? So you have a host of behaviors you are in control of but are not controlling, that is an anxiety symptom. But the physical stuff could be from all sorts of things, including hidden viruses (there are a lot of viruses out there that aren't HIV, and given where you live and travel, you might have picked something up) that are hard for docs to find, hidden bacterial infections, thyroid problems, blood sugar problems, nutritional deficiencies, and all sorts of things people suffer from. Have no idea if you have any of them, your docs say no, but they are not easy to find. Could it be anxiety? Again, if an anxious person gets so unhappy from it they get depressed as well, then it could be, but also again, it doesn't sound like it. But who knows? I'd say, keep seeing your doctors and trying to see if the problem is physiological, and try treating your anxiety in a way that might actually help, which alcohol won't. Peace.
Stay away from alcohol and help others who are in need. This is a good way to make you feel better.