Probably just a panic attack. Thinking about it will only make it worse. Try not to take short/shallow breaths during an episode. You may hyperventalate which increases anxiety, lightheadedness, shortness of breath feeling.
Ha I love the "proabably just a panic attack", sounds so definite and comforting. It might be a panic attack but you could also be about to drop dead. But on a serious note, its hard to even think of breathing when you are convinced you are at deaths door. I cant remember what my breathing was like but I imagine not good.
If you've had your heart checked out by a doc and given an "all clear" then chalk it up to anxiety. If you haven't been checked out then give your doc a call and tell him what occurred just to be safe.
I had an ECG about a month ago and he commented on the rate my heart was beating at but that was because I was convinced I was having a heart attack on the ECG chair! But the more time goes on the more I am starting to question the capabilities of the Doctor who did it. I hope is a built in warning into the actual machine to flag if there is an issue or not. I am debating going to a different doctor for another one and some bloodwork (26 years old and no doctor has ever taken blood to test it - seems mental!) but I think that may only give credence to my worries and make me worse so I dont know yet.
You're focussing on your hear rate too much, which causes it to speed up even more and you get lightheaded. Take antacids for heartburn and I bet it will help!
I can hear just fine thank you! My rate of hearing is excellent!