No you are not alone.These are all modern day diseases. Honestly, I do not even like to call these things diseases, but condition could be a right word. The reason for this is that diseases generally progress and conditions change as per few factors. Also every condition is always a spectrum from white to black and all grey tones in between, I may have the same thing as you in terms of a name but the extent to what I feel and I suffer from may be on a higher or a lower scale.
Anxiety comes from a very simple fact, either lack of micro-nutrients in your diet or a problem to digestmicro-nutrients, meaning these nutrients are not getting to your brain.
Now so many conditions are linked to our gut flora.
Please read these two books, one, "Miracle Magnesium" by Dr. Carolyn Dean and "Brain Maker" by Dr. David Perlmutter.
Eat as per plans created by both of these doctors and also clean your by body doing Liver Flushes
and colon cleanses. After both these cleanses fast with water only to balance your body and mind.
Take the bull by the horn, only you can do it for yourself.