<human>: hi, I have been having a fluttering in my chest (seems like my heart, just left of my breastbone), since last night and throughout the whole day.It feels like bubbles, not painful, just uncomfortable. It is driving me crazy. It happens about every 5-10 minutes, sometimes more often...is it my heart or esophagus?Kind regards
<bot>: Hello! Thank you for asking on Chat Doctor! I understand your concern and would like to explain that it is not very easy to differentiate between different causes of this symptomatology, just referring to your complaints. It may be related to a cardiac arrhythmia or gastroesophageal reflux, or esophageal spasms. I recommend performing some tests besides a careful physical examination: - a resting ECG - a chest x-ray- complete blood count-kidney and liver function tests-blood electrolytes-amylasemia (for the pancreas)- inflammation tests (PCR, sedimentation, fibrinogen), to exclude possible cost Chen Chat Doctor.  - a fibrogastroscopy to exclude possible esophageal disorders should consult with your GP on the above-mentioned possibilities. Hope to have been of help! Best regards, 