Dunno if this helps you or not, but I have been having very weird physical and mental symptoms... And it makes me panic even more, that something is really wrong with me. like bipolar, or schizophrenia or mania disease..... The physical symptoms are; buzzing head, ringing ears, tingling body, cold sweats (my body feels cold but I'm sweating), racing thoughts, can't think straight....
I have seen a few experts, and they all think it is anxiety.... So I'm just hoping that they are right.
Your mind can do all kinds of things to your body. Think about how you can use your brain to do physical things..... well, your sub conscious is just as strong too, and you can have very weird physical experiences... (as I have described)..
So.. try not to worry too much. Anxiety does have physical symptoms! Just do your best to relax, and neutralize stress as much as possible.
sleep helps too so if possible, try to get a good nights sleep!
wish you well.