Thanks for your question on Health Care Magic.
I can understand your situation and problem.
Better than first rule out heart diseases. So get done ecg and 2d echo. If both are normal then no need to worry for heart diseases.
By your history and description, possibility of
stress and
anxiety related symptoms is more.
You are also having
hallucinations (seeing tiny
pimples on skin which are immediately healed).
So better to
consult psychiatrist and get done counseling sessions.
Try to identify stressor in your life and start working on its solution.
You may need anxiolytic and anti psychotic drugs.
Don't worry, you will be alright.
Avoid stress and tension, be relax and calm.
Hope I have solved your query.
Wish you good health. Thanks.