Hello,
So the last few days I have been having brief episodes where my heart rate spikes, I get light headed, there is pressure in the center of my chest, and shortness of breath. It comes on suddenly and ends within a couple of minutes. The longest one I had was about ten minutes. I also have asthma though, so I am unsure if this is my asthma or my heart. I have experience tachycardia here and there in the past, but never enough to see the doctor. These episodes also occur when I am at rest most of the time.