Really Nauseous; Full Blown Migraine; catching breath when going upstairs/ completely winded when going up the stairs and was panting when she got to her desk; heart palpitations and feels heart racing, her pulse seems to fluctuate a lot without her doing things; Dull Headache; sore throat; extreme exhaustion; she went to bed at 6:30 PM, she can barely get out of bed and got up at 5:10 AM; This is a spontaneous report from a contactable consumer (patient herself). A 55-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Formulation: Solution for injection, Lot Number: EN6199) via an unspecified route, administered in Left Arm on 03Mar2021 at 09:45 (55-year-old at vaccination) as a Dose 1, Single for COVID-19 immunization. The patient's medical history included Covid-19 in last Jul2020, which was so bad that she was not able to report to work and trying to work as much as possible from home, some days nothing, some for 3 hours and she was at home until mid Oct2021. The patient's family medical history relevant to AE(s) was reported as none. The patient's concomitant medications were not reported. The patient neither received any other vaccine within 4 weeks prior to vaccinations nor on the same date of the Pfizer vaccine. The patient had not AE(s) following prior vaccinations. Vaccination facility type was reported as Pharmacy and not (Privacy) Facility. On 03Mar2021, the patient had experienced side effects such as sore throat, catching breath when going upstairs, head ache, nausea, and migraine. She stated that she had a sore throat that evening. On the same day (03Mar2021), she stated that she had been extremely exhausted and when she got home from work yesterday, she went to bed at 6:30 PM, she can barely get out of bed and got up at 5:10 AM. She stated she felt extremely exhausted still, had a massive headache, and was nauseous. She stayed home today. On 04Mar2021 (the next day after vaccination), she stated she went to work, and became completely winded when going up the stairs, which was one of the symptoms she had when she had Covid. Stated she got to her desk and was panting. Stated she had printed out when she was supposed to come to work or not based on symptoms, so she left to go get a Covid test and that came back negative. She wanted to know if these side effects are normal, how long does it last, and if it's recommended for her to get the 2nd dose since she was concerned about her experiencing the same thing after getting the 2nd dose and not being able to report to work again. Stated that her HCP suggested to call for more information and that HCP already advised her not to get the 2nd dose of the vaccine and have herself tested for Covid due to the side effects she experienced. She also added that she was also suspected to have Celiac disease which was an autoimmune disease. The reporter had complained about the side effects she was experiencing and her not being able to report to work for a couple of days now which could be a reason for her to get fired. She also had concerns about getting the 2nd dose because the side effects might worsen than the 1st and she doesn't wanted to experience the same thing as what she was experiencing right now. She stated she did go to the doctor yesterday because of the things going on and how she was feeling. She stated her doctor was concerned about her and thought maybe she shouldn't do the next one since how she was feeling. She stated she was scheduled on 31Mar2021. She stated that she wanted to protect herself because of how hard she got hit before but also doesn't wanted to be out of work due to getting vaccine. She clarified that she also had heart palpitations and felt heart racing, her pulse seems to fluctuate a lot without her doing things on 04Mar2021. She clarified that there was no way she could go to work today and slept till 10:30 this morning and thought that she would go back to bed right now if she wasn't talking on the phone. She clarified that she had a dull headache on Thursday and Friday, and that was one of her symptoms from her Covid but today she woke up with a full blown Migraine and really nauseous on 09Mar2021. She was going to the doctor, and she ran a bunch of tests to rule things out and everything came back ok. She stated that, the doctor thought it was just side effects. She clarified that her Covid Test-Negative was on 04Mar2021; She had to go to rule it out. She wanted to know the percentage of being protected after receiving 1st dose of vaccine and wanted to know if it was true that once the patient had Covid and got re-infected again, the 2nd time would be much worse than the 1st time. The patient underwent investigation assessment. The outcome of the events sore throat, dull headache was recovered on 05Mar2021, exhaustion, really nauseous, full blown migraine, heart palpitations, heart racing, pulse seems to fluctuate was not recovered and the outcome of other events was unknown.  No follow-up attempts are possible. No further information was expected.