Is this the only issue you have anxiety about? For many, it is just the worst.

What have you done beside the distractions?

Have you tried any cognitive behavioral therapy based thoughts, such as when you have the sensation the movement was a trigger? Do you try to redirect that thought to "That was nothing" or some other rational thought?

If you respond to the trigger with an obsessive thought then try to use distraction to get free of the obsessive thought, you have likely lost the battle. It is important to stop the thought.

Have you tried plopping down in a chair on purpose or hugging firmly while thinking, 'This is not an impact' ? This is called conditioning or exposure therapy.

Are you taking any meds?

Are you taking any supplements?