Hello and welcome to HealingWell. If your Drs. feel your heart is OK and anxiety is your problem perhaps you would like to join our Anxiety & Panic Forum :
https://www.healingwell.com/community/default.aspx?f=9You will meet many members that have the same types of issues you have posted. Health Anxiety is extremely tough to live with so I am going to post some links for you to take a look at.
Books for overcoming Health Anxiety:
http://www.amazon.com/Feeling-Good-New-Mood-Therapy/dp/0380810336/ref=sr_1_1?s=books&ie=UTF8&qid=1379950432&sr=1-1&keywords=Feeling+Good%3A+The+New+Mood+Therapy+by+David+D.%2C+M.D.+Burns
http://www.amazon.com/Overcoming-Health-Anxiety-David-Veale/dp/1845298241
http://www.amazon.com/Treating-Health-Anxiety-Cognitive-Behavioral-Approach/dp/1572309989
I am here for you and you will find me in the A & P Forum also. Looking forward to getting to know you better.
Kindly,
Kitt