Ya, that's clearly anxious thinking in the face of facts that you can't get HIV that way and you still are not able to stop thinking that way. Are you very nervous in general. I think we're all on edge to some degree around the world right now with the pandemic, covid-19. It brings out things in me that sometimes surprise me. I'll feel depressed out of nowhere, and then chest burning anxiety, and then a surreal state of normal. Very strange times. So, maybe this is all impacting you giving you anxiety. Health anxiety is a real thing. This is when you take something and begin to just envision doom and death from it. Unreasonably so. https://www.health.harvard.edu/mind-and-mood/always-worried-about-your-health-you-may-be-dealing-with-health-anxiety-disorder The important part of this is to think about how the anxiety is negatively impacting you and to what degree. This lets you know what action to take. For some, distraction, good lifestyle choices, meditation apps on their phone, deep breathing all work to help For others, they are more impacted and have to do more. Treating anxiety is something many do and a therapist can be a great help. I have to start with my primary care doctor for things like this.
I posted an answer to your question on the other forum, if it's still up. Haven't checked. As I said then, there are a lot of different forms of medicine practiced in the world. The newest one is allopathic medicine, which is what your doctor does. You report symptoms, he either does surgery or gives you a drug basically. He does diagnostic tests that give pictures which might or might not be clear enough or show what the problem is, as many things don't show up on these exams. One of those that doesn't causes buttocks pain, and that's a problem with an inflamed periformis muscle. I also explained that she didn't finger you, she did an adjustment on your lower vertibrae which goes all the way down to the tailbone. Most chiropractors don't work on the this area, but some pay quite a lot of attention to it. If she thought you had nerve pain it would be because something is impinging on the nerve, which the periformis does but so can lots of things. If you have sciatica, nerve pain going down the side of the leg, it would be even more evidence of a periformis injury but lower back problems can also cause it. This kind of thing is usually muscular in nature even in those with some disc problems. Now, I have no idea what's going on and seeing a doctor would be a good first step. Some things can be ruled out. If the doc thinks it is muscular or disc related you will be referred to an orthopedic surgeon, who will request you get an MRI and Xrays. If it's the periformis, you'll be told nothing was seen. If it's the hips or the lower back or the pelvis something might be seen. If that's it, you'll probably be sent to physical therapy. It's possible this practitioner you're seeing can help you. Older forms of medicine didn't have surgery or imagery, and so they developed other ways of treatment. Sometimes stuff works, sometimes it doesn't no matter what form of medicine you use. But what she didn't do is "finger" your anus. What you don't have is any risk of HIV, as you were told on the other forum. That doesn't tell us what you do have or if this person is genuine or a quack. No idea about that, only that what she did probably isn't as odd as you think and wasn't what you're explaining it to be, in my opinion. Next steps are up to you, but if you have repeated anxiety episodes about HIV that can only be dealt with by changing your thinking, and a therapist can help with that, but that won't solve your buttocks pain, but it might help you stop tormenting yourself. Peace.