First dose: some mild soreness in right arm shoulder; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 56 year-old female patient received bnt162b2 (BNT162B2), administered in arm right, administration date 23Apr2021 (Lot number: ER8731, Expiration Date: 31Jul2021) at the age of 55 years as dose 1, 0.3 ml single for covid-19 immunisation. The patient had no relevant medical history. The patient's concomitant medications were not reported. The following information was reported: ARTHRALGIA (non-serious) with onset 24Apr2021, outcome "recovered" (25Apr2021), described as "First dose: some mild soreness in right arm shoulder".  Additional information: Patient who called regarding the booster dose of Pfizer Covid-19 Vaccine she was administered. She got really, really sick for 4 days so she just wanted to get some feedback. She did call her doctor when it happened. Now its like, she believed in vaccinations, but she was really super afraid to get a booster again. She wouldn't say she had adverse reaction, it falls over into side effects categories. She was fine now, recovered completely from all events, but she was very nervous about getting any additional booster doses of the Pfizer Covid-19 Vaccine and wanted some feedback from Pfizer about these events and future booster doses of the Pfizer Covid-19 Vaccine. After being administered the booster dose of Pfizer Covid-19 Vaccine patient reported the onset dates 26Nov2021, onset times unknown: got really, really sick; severe chills like she has never had in her life, she felt like she was almost convulsing, could not keep her body still. She took Advil which seemed to calm it down a bit. Even though she was on Advil and Tylenol for 4 days she had a fever of 101 degrees Fahrenheit while on those medications. She also had severe body aches and like her bones hurt like in her thighs. Onset date: Unknown if 26Nov2021 or 27Nov2021. Onset time unknown. Where the injection was administered in her right arm shoulder was very sore- she would say event lasted for a full week until unknown date in 2021 and she recovered completely; this event with the arm was expected, that was the least of her worries. After being administered the first dose of Pfizer Covid-19 Vaccine patient reported the Onset date of 24Apr2021 at unknown onset time and some mild soreness in right arm shoulder, which was nothing to worry about. She recovered completely by 25Apr2021. After being administered the second dose of Pfizer Covid-19 Vaccine caller reported: Onset date of 15May2021 at unknown onset time: some soreness in the right arm shoulder. Onset date of 15May2021, onset time: unknown other than a full 12 hours after administration of second dose of Pfizer Covid-19 Vaccine: body aches which were not severe. She took 1 Advil for these events and the Advil cured her, she was back to normal, over the body aches; She recovered completely from these events by 16May2021. Thats why she felt really positive about getting the booster dose later. Regarding testing/treatment/medical interventions caller reported the only other relevant information was that she had a telemed appointment with her doctor because she did not feel well enough to go to his office relative to the events experienced with the booster dose of the Pfizer Covid-19 Vaccine. None, she has never even had a flu shot and never had any adverse events following prior immunizations. None, no underlying health issues, she is a relatively healthy person. Patient mentioned her family and friends all got the Pfizer booster and did relatively well so thats why she herself was really shocked at how sick she got. She had concerns about getting any future booster doses of Pfizer Covid-19 Vaccine. Her doctor had a suggestion about maybe getting antibody test first before the next booster. Patient did not want to report further information regarding her family and friends that all got the Pfizer booster: lots/ndcs/expiries: not provided, caller did not want to report further information. Consumer was the patient reporting adverse events with Pfizer Covid-19 Vaccine. During that report patient mentioned treatment of those events where she mentioned: Even though she was on Advil and Tylenol for 4 days she had a fever of 101 degrees Fahrenheit while on those medications.  No follow-up attempts are possible. No further information is expected.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202101886115 similar report from same reporter