Probably the most common symptom of any heart failure is the irregularity in heartbeat. If you are very observant enough, this would be the first one you will immediately feel. This medical condition is called arrhythmia. It is basically a problem with the rate or rhythm of the heartbeat. When you have an arrhythmia, you may notice that your heart is skipping beats or beating too fast. If this irregular heartbeat coincides with episodes of unexplained pains, then we suggest you see your doctor immediately.
But do not be so paranoid if you happen to get one to two symptoms out of the 11 we mentioned here. It is still best to consult with your doctors than treat yourself based on self-diagnosis. Long live!