I was diagnosed within a couple of weeks. I went to the dr. with a droopy eye and within 2 weeks they ran many tests, MRIs, CT scans, etc. and called to say I had MG. I had a thymectomy within about 6 weeks.

For about 6 months before I had some weird pains and did terribly on a heart stress test (Couldn't breathe). So it turned out everything was related.