I read back over your previous posts and it seems that you have been dealing with this problem for a very long time. As far as providing a diagnosis for you, since we aren't doctors here, we really can't diagnose. Hope you share with your doctor all of the symptoms so he can figure out this complicated picture.
Having seen 7 Drs. already I am wondering if any of your Drs. have mentioned Health Anxiety?
Also you are posting in the Heart Forum so you may want to post in the Asthma Forum.
I wish you well and hope you are able to get relief from your many worries and problems.