headache; did not sleep well; had no energy; sick; fever; feeling kind of miserable; freezing real bad; fatigue; nausea; body ache; chills; dizziness; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program (159558). The reporter is the patient.  A 50 year-old female patient received bnt162b2 (COMIRNATY), administered in arm right, administration date 01Oct2021 14:00 (Lot number: EW0167) at the age of 50 years as dose 3 (booster), single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Covid-19 vaccine (1st dose with lot EP6955), administration date: 01Apr2021, for Immunisation; Covid-19 vaccine (2nd dose  with lot EW0164), administration date: 27Apr2021, for Immunisation. The following information was reported: DIZZINESS (non-serious) with onset 01Oct2021, outcome "recovered" (02Oct2021), described as "dizziness"; FATIGUE (non-serious) with onset 02Oct2021, outcome "unknown", described as "fatigue"; NAUSEA (non-serious) with onset 02Oct2021, outcome "recovering", described as "nausea"; PAIN (non-serious) with onset 02Oct2021, outcome "unknown", described as "body ache"; CHILLS (non-serious) with onset 02Oct2021, outcome "recovered" (2021), described as "chills"; PYREXIA (non-serious) with onset 04Oct2021, outcome "recovered" (05Oct2021), described as "fever"; HEADACHE (non-serious), outcome "unknown", described as "headache"; FEELING ABNORMAL (non-serious) with onset 02Oct2021, outcome "unknown", described as "feeling kind of miserable"; FEELING COLD (non-serious) with onset 02Oct2021, outcome "unknown", described as "freezing real bad"; SLEEP DISORDER (non-serious), outcome "unknown", described as "did not sleep well"; ASTHENIA (non-serious), outcome "unknown", described as "had no energy"; ILLNESS (non-serious), outcome "unknown", described as "sick". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of dizziness.  Additional information: Patient was taking vaccine because of the covid and she didn't want to die. Patient didn't knew her HCP's first name and had no further contact information to provide and had not contacted him yet but a friend told her to call Pfizer to report this. Patient declined to provide email address. States she had the booster dose of the Pfizer COVID Vaccine on Friday at about 2:00pm and worked at a dermatology office and the pharmacist gave them all the booster and flu shots if they wanted them; stated she choosed to get the booster vaccine and get the flu vaccine this week and she did not have any problems with the first two doses of the Pfizer COVID Vaccine. About 30 minutes after she got the booster vaccine she got kind of dizzy at work and drank a bunch of water and took Tylenol and this happened off and on for about 30 minutes and she was then kind of over it; states at about 5:30pm she was a little dizzy once or twice but it was not a big deal and went to bed that night and got up the next morning about 8:30 or 9:00 and felt like crap and a friend told her if she was going to have side effects said it would be about 12 hours after getting the vaccine. she woke up feeling kind of miserable and was really fatigued and nauseous and the next hour started having body aches all over and then started freezing real bad and had chills and had three blankets and a heating pad and could not get warm; states she took Advil and her fever finally broke and she did that on and off all day Saturday and Saturday night and had chills, body aches, and was real fatigued all day Saturday and Saturday night. On Sunday and yesterday had pretty much the same thing; states her temperature never got over 100.1 degrees Fahrenheit, and most of the time the temperature was 99.9 all day and on Sunday it went on. She did not want to go to the emergency room because she did not want to get covid and did not feel like going to her HCP and would not say she felt like she was going to die but her friend said she needed to report this. Stated she did not remember the arm that she had the first two doses of the vaccine in but guesses it was her left arm where she usually does vaccines. She did not know the dosages of the Advil or Tylenol and took the Tylenol at work and alternated with Advil and Tylenol at home and threw away the bottles; stated she began taking the Advil and Tylenol on Friday 01Oct2021 and had no lots, expiry dates or numbers to provide. She wanted to see if all of this sounded normal to people getting the booster vaccine or if would help her feel better.   Follow-up attempts are completed. No further information is expected.