I am experiencing an accelerated heart beat a odd times.  I was just sitting down watching television and it started.  My heart feels as if it is about to jump out of my chest.  This is not the first time.  It has been happening since I got sick over the christmas break.
Thanks for your question on Chat Doctor. I can understand your concern. In my opinion, we should first rule out arrhythmia (rhythm disturbances in heart) in your case. Arrhythmias like atrial fibrillation (AF), atrial flutter, supra ventricular tachycardia (SVT) etc. can cause rapid heart rate with pounding sensations. So better to get done ECG, 2d echo and Holder monitoring (24 hour continuous monitoring of ECG) to rule out these causes. You may need anti arrhythmia Chat Doctor.  Avoid stress and tension, if you are having stressful life. Don't worry, you will be alright. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.