Anxiety!
This could be a sign of a serious heart condition. It may be that you are having a cardiac arrhythmia that is affecting your pulmonary function. You should see your doctor right away.
palpitations (feeling of skipped heart beats or fluttering in the chest); pounding in the chest; shortness of breath; chest discomfort; fainting; dizziness or feeling light-headed; weakness, fatigue, or feeling tiredpalpitations (feeling of skipped heartbeats or fluttering in the chest) pounding in the chest shortness of breath
palpitations (feeling of skipped heart beats or fluttering in the chest); pounding in the chest; shortness of breath; chest discomfort; fainting; dizziness or feeling light-headed; weakness, fatigue, or feeling tiredpalpitations (feeling of skipped heartbeats or fluttering in the chest) pounding in the chest shortness of breath
no idea but I'm sure its not fatal. As I'm writing this I'm having a fluttering spasm.
It's probably just a heart palpitation Nothing to worry about
Chest flutters are also know as PVCs or Premature Ventricular Contractions. The can be caused from anxiety, fatigue, too much exercise.
"palpitations" are any feeling (as in to palpate) , or anything you can feel. in this case if you are having fluttering feelings in your chest... it could be atrial fibrillation or any number of other heart arrhythmias or it could be nothing. Get it checked out by a Dr. if it occurs every day it will be easy to capture on an overnight heart monitor... if it only happens every few days etc, a 30 day event monitor would be more appropriate.
The symptoms are variable for people, but most of the patients with atrial flutter describe having a rapid heartbeat, a fluttering feeling in the chest, shortness of breath, anxiety and weakness. This does not count for people with heart or lung diseases.
Symptoms of an arrhythmia include a fast heart-beat, pounding or fluttering chest sensations, skipping a heartbeat, "flip-flops," dizziness, faintness, shortness of breath, and chest pains.
If a person is feeling tightness in her chest and having cramps she should go to the hospital. Your friend could be having a heart attack.
If you have pain in your chest that lasts more than a few minutes, you need to seek medical attention. You could be having a heart attack if you are also having the pins and needles sensation with the chest pains.