<s>[INST] UI ve had these flutters on my right side of my chest beneath my breast bone for 2 days is no pain or shortness of breath breath just fluttersI ve had these fluttets on the right side of my chest beneath my breast bone for two days they come and go. No pain or shortness of breath. [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Fluttering sensation in chest is commonly seen with arrhythmia (irregular heart beats). So we need to first rule out arrhythmia. So get done ECG, 2d echo and Holder monitoring (24 hour continuous monitoring of ECG). If all of them are normal than no need to worry about arrhythmia. Sometimes muscular twitching can also cause fluttering sensations. Calcium deficiency is common cause for this. So get done calcium level and if deficiency then you need supplements. Stress and anxiety is another cause for fluttering. So if you are having stress than avoid stress and tension, be relaxed and calm. Hope I have solved your query. Wish you good health. Thanks. </s>