Thank you Teresa. The NP Pulmonologist suggested a cardio pulmonary stress test (Is that the right term?), the one where I do the stress test while they draw blood. My rheumotologist, neurologist, and GP were all unfamiliar with this, and they didn't order one. They said the Pulmonologist needs to order it, but the pulmonologist (NP) said she wouldn't since there was no pulmonary problem. I will keep pursuing this.