###Human: What are the symptoms of atrial fibrillation? ###Assistant: Hello. Yes, it is possible, but a likely possibility is of ventricular ectopics (or other causes) rather than Afib which could also cause irregular heartbeats on the machine. Even in normal individuals, the machine may falsely show irregular beats. Few points which are against are fibrillations are normal ECG especially if you had it done while having symptoms, even examination by a doctor for pulse and auscultation will help in diagnosing Afib. Also, the pulse rate is expected to vary to a large extent and cross the 100 bpm. You may also feel irregularly beating heart within your chest. Also, you can keep a finger over the pulse and feel irregularity and missing pulse. So, it could be an ectopic which is now settling. The only way to definitely confirm is ECG. If this continues, you may a get an ECG done or buy a home-based rhythm monitor like Alivecor Kardia device which records the ECG for interpretation. So, overall unlikely to Afib, but either ECG or examination by the doctor can confirm this. The other cause for pain in such settings is gastritis or reflux, which can commonly cause such symptoms. Also, ectopics may cause pain as well. Anxiety can also cause similar symptoms. Have plenty of water and adequate intake. If you are having these drugs for a long time then the possibility of withdrawal should also be kept. Hope this helps you and get back if you have any doubts.