Yes, severe anxiety like what you're describing can cause tons of physiological symptoms. Or not. But given how you describe yourself, you need intervention, which I hope you can get somehow at least by the internet with a psychologist so you can begin working on what you do have, severe anxiety. For the rest you've apparently seen a doctor, you're very lucky to have gotten tested, most Americans still can't get one, and it came out negative. But the symptoms you're mentioning are ones that anxiety sufferers get. They can also be symptoms of lots of other things, but again, you're come out and said you're having panic attacks and severe anxiety so that's the most likely problem here. If a psychologist can't help you through therapy and relaxation techniques, at the level you're describing you might need to see a psychiatrist and get medication, your psychologist can tell you if that seems necessary. In the meantime, do you know anyone who can teach you meditation and some breathing techniques to take the edge off a bit? Are you able to exercise at all, that can help as well. Do you have people you can talk to?
Hello~You are welcome to read I blog that I posted on my page called "I had no idea there were so many Anxiety symptoms. WOW. I think this will really help you. I have bad anxiety and panic and have lots of the symptoms. I hope you can relief soon, it is no fun having these symptoms.
Ahh, honey. I understand. It's scary. And absolutely, we hyper focus on ourselves and we start to feel every little thing. And then our anxious brain starts applying it to what we are afraid of. It's terrible. And it all feels very real even if on some level we know it is our anxiety. Sore throats happen. Colds happen. Viruses happen. And you will probably be okay if you were to get covid 19 if we look at statistics and odds. But I understand the fear. I have it too. Do you have anyone you can talk to professionally? I know that a lot of therapists are doing virtual sessions right now to help people out.