Anyone here with health anxiety or GAD?

Just feeling beatdown. Have had health anxiety for the last 15 years or so. I haven't been diagnosed with ADHD yet but my gut says I do have it.

For the past four years, I have had such a grip on the fear of fainting or falling. Everytime I sit down or even am remotely bored and feel a dip in my energy, my body raises an alarm that I am going to fall/ faint.

It's been so exhausting dealing with this on the daily. I can't even go to restaurants to enjoy a meal. Sitting down or even standing up without movement brings on the fear immediately.

I need constant stimulation or else my mind wanders.

Feeling so non functional as of this moment. I WFH and my career is going really slow.

I am looking for resonance, a kind word or two because I am feeling tooe exhausted to even get to fixing this.