it'll feel like little flutters; Heart palpitations; Shortness of breath; Didn't feel like normal self; Site pain; Chest pressure; Difficulty sleeping because of heart rate; Fatigue; This is a spontaneous report from a contactable consumer (patient). A 69-year-old female patient received the second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE, lot number: EP7534), via an unspecified route of administration administered in right arm on 29Mar2021 at 09:20 (at the age of 69-year-old) at hospital facility as SINGLE DOSE for COVID-19 immunisation. The patient had no prior vaccinations within four weeks. The patient had no relevant medical history. Patient reported that she has people in the family that have had heart problems. Concomitant medication included unspecified vitamins. Historical vaccine includes first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE, lot number: EM9990 or EM9890) administered in the right arm on 08Mar2021 (at the age of 69-year-old) for COVID-19 immunisation and had a little fast heart rate but not constant, little fatigue and site pain. The patient previously took steroid injections 2 years ago (2019) and had heart palpitations before. The patient further mentioned that normally after the steroids wear off, the heart palpitations go away. The patient reported that she did not have any problems following the first dose of the COVID-19 vaccine. Caller reported that she had a little fatigue and site pain for just a couple of days but that everything was fine. Patient reported that she felt a little heart palpitations for maybe a day or two and then it was gone following the first dose of the COVID-19 vaccine. After she got the second dose of the COVID-19 vaccine on 29Mar2021, she noticed the heart palpitations again and a little shortness of breath. The heart palpitations and shortness of breath were nothing that she felt that she had to run to the emergency room or anything over. The patient reported that now it was getting difficult for her to sleep sometimes at night because of the heart rate. The patient also reported that she was trying to figure out that from this length of time between her second dose of the COVID-19 vaccine on 29Mar2021 and time of call on 14Apr2021, could the heart palpitations be a side effect from the COVID-19 vaccine. Patient also mentioned that when she experienced heart palpitations before, a whole work up was ordered and she was referred to cardiology and that nothing was found during the work up after previous experience with heart palpitations. The patient also mentioned that she has been fine, that she has been able to work and walk and that she gets her 10,000 steps every day. After getting the COVID-19 vaccine, she was tired and didn't feel like her normal self. The patient also reported that when the time had arrived to get the second dose of the COVID-19 vaccine, about a week before, she may have had a little fast heart rate but not constant. It was also reported that following her second dose of the COVID-19 vaccine on 29Mar2021, the fatigue started about the same time as it did following the first dose, on the second day post-vaccine on 30Mar2021. Patient reported that she was kind of tired and just taking a nap during the day. The fatigue was still ongoing. It was also reported that patient was starting to feel better other than the heart palpitations. The patient reported that yesterday, 13Apr2021, she felt great and could do her normal routine, other than feeling chest pains and palpitations. The heart palpitations are not constant, but are more regular during the day than she was used to. The heart palpitations were really bad last night, 13Apr2021, and that she had difficulty sleeping because of heart rate (couldn't hardly sleep at all). The patient's doctor was scheduling her for an echocardiogram. The patient's doctor did an electrocardiogram (EKG) on her on 08Apr2021 and there was nothing there (normal). The patient's doctor was scheduling her for a stress echocardiogram. The patient also mentioned that after returning from the physician's office, her husband went back and looked at the symptoms from the COVID-19 vaccine information sheet. The patient reported that her husband thought that she needed to call to eliminate everything, that they are trying to figure out why the patient was experiencing the heart palpitations. The patient also mentioned that 2 days ago she got on her treadmill to walk and went for 30 minutes. Patient reported that it normally takes her 5 minutes to recuperate, but that time it took her 20 minutes before she felt comfortable after her walk. The patient also reported that the site pain was nothing serious following both doses of the COVID-19 vaccine. The site pain began shortly after receiving the vaccine and went away after the second day following both vaccines. The shortness of breath probably started about 5 days after she got the second dose of the COVID-19 vaccine. The shortness of breath wasn't enough that she felt that she needed to run to the emergency room. It just felt like when she would breathe, especially at night as she normally breathes with her mouth closed at night, the patient felt like she had to open her mouth to breathe because she can still feel the pressure in chest. The patient was still experiencing the heart palpitations. The heart palpitations are a little worse because they happen so often. Patient reported that initially, she would have a few heart palpitations and then go for hours with none. Patient reported that now, she was feeling the heart palpitations quite a bit. Patient reported that it feels kind of like a little pressure in her chest and then it'll feel like little flutters. The patient further reported that she experiences a little pressure in her chest when she experiences the heart palpitations. At times, the chest pressure would go away, but she always feels the chest pressure there now. The chest pressure has gotten worse over the past couple of weeks and that she was thinking that it would go away like the first one did. Patient reported that she went to the doctor last week and was given an EKG. Patient reported that the EKG was fine and that her physician was scheduling other tests to make sure it's nothing with her heart. The patient didn't think that the heart palpitations and shortness of breath were from the COVID-19 vaccine, but that her husband looked at the vaccine information paper after her doctor's appointment and said she should call Pfizer. The patient had not yet recovered from heart palpitations, shortness of breath, fatigue, and chest pressure while outcome of the rest of the events was unknown.