Yes. Over and over. Only thing found so far is left to right shunt in my heart. This means oxygen-rich blood is skipping my body and going back to lungs for a refill even though already full. Doc says this can definitely cause shortness of breath, lightheadedness, fatigue, falls, etc. So far he hasn't said what, if anything, can be done about it. He said he would call this week after he reviews additional test results. It is just frustrating to KNOW there is a problem, but to also feel like since the problem is not "their" problem (doesn't fit in the typical box of their "specialty") that the problem does not exist in the minds of doctors. I know the people in this discussion fully understand what I mean. Sigh.