Your symptoms sound exactly like mine were. I can especially relate to the pressure and ringing in the head. You almost feel like you're going to have a stroke. The anxiety and panic seems to come from nowhere, and always seems to come when you would think it wouldn't.
However, I must say here that the very things you are taking and doing contributed to my problems. I found that things like probiotics, herbs, and vitamins made me worse. Whether this was my body or my psyche, I don't know. I wasted three years fighting candida, which I now question the existence of, insofar as it is defined in complementary medicine.
Anxiety is eating you alive, including your Arthritis and prostate symptoms (yep, I've had them too). Bet you have skin issues as well. And your poor liver function is making things worse. That's why the coffee enemas helped, which probably seemed to calm and relieve you even as you did them, right?
Here is what helped me. I quit all supplements. I quit all pharmaceuticals. I began to Liver Flush two years ago. I didn't always fool with the apple juice, and I didn't go for colonics. I simply avoided fat for a day or two before the flush and mostly didn't eat anything the actual day of.
I never did anything for parasites or kidneys, mostly because all the "cleanses" for them involved great gobs of herbs, many of which I had never heard of or had bad experiences from.
I flushed every three weeks for a year and then every five or six weeks for a year. I've done twenty-one. Always the same basic way: Epsom Salts and olive oil/citrus juice. I find them unpleasant and they always kill a couple of days.
But my symptoms have slowly improved. My liver was a toxic brew of poison and poor function.
I would suggest you eat a good healthy Diet of foods you enjoy, avoid as many drugs, pills, and potions as you possibly can, and begin a program of Liver Flushing at least once a month.
I can almost guarantee you'll get better.