Severe pain in the stomach; Increase in heart rate; her arm "hurt like hell"; Scared to death of COVID; Heartburn; Tired; This is a spontaneous report from a contactable consumer (patient) via medical information team. A 44-years-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Formulation: Solution for injection, Batch/Lot number: not reported), dose 1 via an unspecified route of administration on 06Aug2021 as dose 1, single for covid-19 immunisation. Medical history included covid-19 virus from Mar2021 to an unknown date. The patient's concomitant medications were not reported. On unknown date in Aug2021, the patient experienced scared to death of covid; heartburn; tired; her arm "hurt like hell"; On 09Aug2021, increase in heart rate; On 12Aug2021, severe pain in the stomach. The patient underwent lab tests and procedures which included heart rate: 106 on 09Aug2021 increase in heart rate and that it was 106 bmp at rest, sars-cov-2 test: had the covid 19 virus on Mar2021 she previously had the COVID 19 virus in March2021. It was reported that stated that she was looking for some information on the Pfizer COVID 19 vaccination and the symptoms she has experienced since her first dose. She stated that she previously had the COVID 19 virus in Mar2021. She stated that she is healthy and has no underlying conditions. She stated that she waited for 3-4 months after having COVID because she had antibodies. She stated that she's an elementary school teacher for younger children and she wanted to be fully vaccinated before school started back in September. She stated that she was "scared to death of COVID and did not think she will make it if she gets it again". Once she had her first dose she states that she was fine with the regular side effects and knew what to expect. She mentioned that her arm "hurt like hell" and that she was tied but that wasn't a problem because she was used to being tired. She got it on the 6th which was a Friday and on the 9th she reported having an increase in heart rate and that it was 106 bmp at rest. She reports that it was the same on the 10th. Elevated heart rate went away and she states that she figured her body was just making antibodies. She then reported on the 12th she began having severe pain in the stomach and it felt like bubbles and somewhat like heartburn. She stated that on the 13th it got worse and then started to level out on the 14th. On the 16th,17th,18th and today the 19th its gradually gotten better but still at a moderate level. She compares it to inflammation of the intestines and/or esophagus and that she was "beside herself". She relays that she spoke with her doctor and they asked if it could possible be something she ate that caused these symptoms. She stated that she had not had any foods that were out of the ordinary for her and had no tried any new foods or experimented with anything she provided an example of, "like, spicy Indian food or anything like that". The clinical outcome of event increase in heart rate was recovered on unknown date in Aug2021; outcome of severe pain in the stomach was recovering; while other events were unknown.  The lot number for the vaccine, [BNT162B2], was not provided and will be requested during follow up.