Oh dear, oh dear. I'm so sorry for you and what your family has been through. I wouldn't want to wait six months either. A treadmill stress test sounds pretty arduous to me. I had one about 15 or so years ago and found it very unpleasant. When I was told recently that I had to have another one, I sort of panicked. I didn't want to go through that again, but this time the stress test involved an echocardiogram and another test where something radio active was put into my veins and a big machine came down on my chest and did something. That wasn't pleasant either, but it was better than that dang treadmil. Just saying. Let your doctor know how anxious you are. That's worked for me. Best of luck to you.