it began working up her arm with arm pain and chest pain which persisted and she went to the hospital and was admitted for 23 hours; it began working up her arm with arm pain and chest pain which persisted and she went to the hospital and was admitted for 23 hours; blood pressure went up to 198/203; still has tiredness; difficulty swallowing like her throat is still tight; difficulty swallowing like her throat is still tight; short of breath; This is a spontaneous report received from a contactable consumer (patient). A 78-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Lot Number: EN6205), first dose via an unspecified route of administration, administered in Arm Right on 11Mar2021 11:00, single dose for covid-19 immunisation. Medical history included silent heart attack, ongoing Barrett's oesophagus from 2008, fall she had over two months (2021), eye surgery on an unknown date. She does not get any shots and can't have shots even for the flu shot because she had problems with two flu shots she had; states she had a problem with each one of the flu shots and does not know the names of the flu shots and has no lot numbers to provide for them; states she had the flu shots in the early 1990's and worked in healthcare and had to have them and they told her back then if she wanted to work she had to have the flu shots and then she got sick with both of the flu shots and they said they guessed they would not force her to have the flu shots. The patient's concomitant medications were not reported. Patient had the first dose administered and then about 14 hours after (12Mar2021) that she had no problems until it began working up her arm with arm pain and chest pain which persisted and she went to the hospital and was admitted for 23 hours. She does not know what to do about getting the 2nd dose of the vaccine and was at her cardiologist's this week and he said he is not familiar with the Pfizer vaccine causing chest pain; caller states she has a history of silent heart attacks. She still has tiredness and difficulty swallowing like her throat is still tight and they told her to mention if she does go for the second dose of the vaccine to mention that she had this situation.The chest pain and arm pain began 12Mar2021 and the arm pain is in her right arm where the vaccine was administered and the arm pain and chest pain have resolved; states the arm pain and chest pain stopped and she thinks that lasted about an hour and a half and she called a family member to take her to the hospital; states about 2:30am that same day she was admitted the morning of 12Mar2021 and was discharged on 13Mar2021. They ran every test known to the patient and for a while her blood pressure went up to 198/203 in the emergency room (12Mar2021) and she is not on any medication; caller states she does have Crestor but has not started on it and has not taken it yet. The tiredness and difficulty swallowing like her throat is still tight began the same time she was having the chest pain and she is not having any chest pain or anything like that right now but the tiredness and difficulty swallowing like her throat is still tight is still ongoing; states she did go get cardiac clearance to make sure which was this past week and she does not feel well and like for her the tiredness is bugging her. The tiredness and difficulty swallowing are better but she knows they are there and she tries to swallow something and is like boy her throat is still tight. They did an ultrasound in her left leg because she was limping from a fall she had over two months ago but still has a sore ankle from that and they sent her down for the ultrasound and a CT looking for blood clots in her lungs because she was short of breath (12Mar2021); caller states she thinks they were running everything they could to rule out things; states everything was negative for the CT and ultrasound and she believes the CT and ultrasound were done on 12Mar2021. She has no idea when she was diagnosed with silent heart attacks but they kept asking her about this when she went in for eye surgery and asked her when she had a heart attack and she said she had never had one and they said yes she had and she never knew. She just set up a HCP appointment after the reported events with a gastroenterologist because she has Barrett's and because of the esophagus she did not know if it flared up by the Pfizer vaccine and that caused the pain because the two pains of the heart and esophagus mimic each other with pain going up into the jaw so they were ruling out which one it was; states she went out as an atypical chest pain and called the cardiologist and went in and went over her records from the hospital with the cardiologist. She does not know what caused what in terms of the pain. The outcome of the event blood pressure increased was unknown, chest pain and pain in arm was recovered, other events was recovering.