Greetings. Well, it seems like you have developed health related anxiety which is clinically described as Hypochondriasis where in the person tends to get overly concerned and overwhelmed by minor ailments or injuries and begin to equate them with severe and often life threatening consequences. So there is this perpetual anxiety loomng underneath regarding getting sick or injured which is exactly what you have been experiencing.

You seem to be having lot of anxiety about the same. Tremors, feeling anxious or nervous, sense of panic, sweating, increased heartbeat, feeling of impending doom, stomach discomfort, dizziness etc are signs of anxiety. These can be debilitating. If the anxiety us overwhelming, consult a psychiatrist at the earliest. With the right medication and counseling, it is likely your symptoms will improve. Other than that, try yoga, deep breathing, meditation, moderate exercise, progressive muscular relaxation and guided meditation

Seems like too much anxiety. Relax by doing Shavasana and going for a walk. Visit a Psychologist for further treatment.

The symptoms you have described suggest more towards an anxiety spectrum disorder. Anxiety spectrum disorders usually can be very well be treated both with drugs and psychotherapy.

Was there any incident which relates to that fear happened in the last one year or so? Or did u happen to meet someone who had an issue like that. ? Because for every behaviour there should be a reason behind it.