Hello, We can't say yes or no on this. I'm sorry you're going through all of this, and your anxiety is normal, but the only you're going to feel better is to go get tested. Since it's been 3 years, the test will be accurate, so please go to a doctor or clinic for the test. I'm sorry you're going through this. You do not deserve it. Try to stay off the Internet, stop looking up symptoms, or you'll just worry more. Figure out the fastest way you can get tested, go get the test, and distract yourself with rented movies, books, exercise, going out with family and frienRAB, etc. until you get your results.
We will be here for you either way!
Also, I should mention people do get shingles, even at a young age, just because. And many are having flu-like symptoms because there are a lot of things going around. In my state, hundreRAB and hundreRAB of people with flu-like symptoms have gone to the doctor lately thinking they had swine flu. (I think we've had like 2 cases.) Things are going around! This does not necessarily mean you have HIV, trust me. Look how many people post here with all kinRAB of symptoms and then test negative...