YIKES!! I sure don't want you to DIE waiting for a diagnosis!!
So, I'm gonna make a recommendation. Get some
ephedrine and see if it helps your breathing. You can get ephedrine in tablet asthma meds -- Primatene or Bronc-aid (sp?).
EARLY on (in the 1920's, I think), someone discovered that ephedrine was like a "miracle" drug for MGers. It gives us a boost -- restores some strength. Of course, long term use is NOT good for your heart. But, with you sitting there worrying about stopping breathing...........
Here is a link -- scroll down to "treatment and monitoring" and see ephedrine sulfate:
http://www.medicineonline.com/articl...ia-Gravis.html
CAUTION -- IF you have heart problems, ephedrine should be avoided or used with great caution. (See warning labels on box.)