Hello and welcome to Healthcare Magic. Thanks for your query.
It is likely that the symptoms which you are experiencing are anxirty-related. It is important to understand that anxiety
can present with not only psychological symptoms but also with physical or somatic symptoms. Shakiness, burning or tingling
sensations, breathing difficulty, etc. are symptoms which are commonly seen in anxiety disorders.
It is possible that you could have had a panic attack
initially and the present symptoms are residual symptoms of anxiety. It is an unlikely clinical possibility that your symptoms could be due to mercury toxicity.
Wish you all the best.
Dr. Jonas Sundarakumar