Got my holter monitor today. Records every heartbeat for the next three days and I push a button on it whenever I have…

Got my holter monitor today. Records every heartbeat for the next three days and I push a button on it whenever I have symptoms. I've had issues with my heart rate off and on for a couple years now but have never been able to get the issue on an ekg. I get really dizzy and lightheaded, and it is hard to catch my breath. It comes on with exertion and gets worse when I stop moving after my heart rate has increased. I fainted at work last weekend and got a concussion so my doctor gave me a note to get out of work until they figure things out. Stress test on the treadmill November 15. I'm glad my doctors are taking me seriously this time. The first time they said it was anxiety, but that was down in Texas.