This particular forum is for the disorder of anxiety. We don't answer questions here ever about risk and I'm sure you've already been to the other forum to ask about that. Your answer was probably that you didn't have a risk. What we can talk about here is that your logical brain is being overruled by your anxiety. Health anxiety is real. The fear you have, the symptoms of anxiety you have which could be a panic feeling, a burning chest, non stop ruminating all could be anxiety related. A therapist could be very beneficial to give you tools to reframe your thinking. To get to a point where you can use coping tools. If you can find a therapist that works a lot with anxiety, this could change the way you deal with this and maybe even the way you think so you can move past the fear. There are a lot of books on the subject too which you could start immediately. The most important thing to remember is that anxiety can feel horrible but in the small picture, won't hurt you. But in the big picture, leaving it unchecked it does impact your life negatively. So, get some help with it. Lifestyle things like proper sleep, nutrition and getting exercise is very important. I have been doing 'yoga for anxiety'. That's all i searched and found lots of videos to try. It's mostly just yoga with a few extra soothing things thrown in but it can be calming. Meditation apps like headspace or calm are also calming. I was never big on meditation but the way Calm works (the one I use), it's easy to follow and get into. So, work on this issue from the anxiety perspective and let the blood fear go. Blood won't ruin your life, but anxiety can.
I'm personally very big on meditation because even if it doesn't help with anxiety it helps a lot with our spiritual selves and it forces us to take some time out to just sit and be quiet. Although it never really got rid of my anxiety, it did really help me stay healthy despite it and now that it doesn't work anymore I'm a lot more tired and cranky and I really miss what it used to do, so again, I'm really big on it. As for that cupping, I don't know where you think that involves cutting the skin, I've had it done and it didn't do anything for me but no, they don't cut anything. But that's neither here nor there. You have a phobia. If this is the only phobia you have, you don't have an overall anxiety problem, just the one phobia. But if you have a lot of things that make you anxious, then you have an overall anxiety problem. I mention this because a single phobia is pretty easy to treat relative to overall anxiety problems, and doesn't take that long, so I'd stop thinking of all this HIV stuff from things that probably have no possibility of causing it and see someone who knows how to treat phobias. On that HIV forum, virtually nobody on it has any risk at all from what they did so having an HIV phobia seems to be a pretty widespread problem and so I'm guessing psychologists have gotten pretty good at treating it. Peace.