Arm was sore a couple of days It was not worse than any other shot; Today, she is very tired; She got the chills last night and hadn't felt a thing; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  An 84-year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 22Apr2021 (Lot number: EW0164, Expiration Date: 31Aug2021) at the age of 84 years as dose 1, 0.3 ml single for covid-19 immunisation. Relevant medical history included: "prolapsed rectal" (ongoing), notes: prolapsed organs (From: Unspecified To: Ongoing); "prolapsed bladder" (ongoing), notes: prolapsed organs (From: Unspecified To: Ongoing). Concomitant medication(s) included: BABY ASPIRIN (ongoing); METOPROLOL TARTRATE taken for hypertension (ongoing); LORATADINE taken for hypersensitivity (ongoing); LOVASTATIN (ongoing). The following information was reported: CHILLS (non-serious) with onset 26Apr2021, outcome "recovering", described as "She got the chills last night and hadn't felt a thing"; PAIN IN EXTREMITY (non-serious), outcome "unknown", described as "Arm was sore a couple of days It was not worse than any other shot"; FATIGUE (non-serious) with onset 27Apr2021, outcome "unknown", described as "Today, she is very tired". Therapeutic measures were not taken as a result of chills, pain in extremity, fatigue.  Additional information: Family medical history relevant to adverse events reported as no. Patient has been taking Metoprolol Tartrate since a year or so for high blood pressure, Loratadine commonly known as Claritin for allergies. Lovastatin commonly known as Mevacor. Patient only takes low doses, mostly 10mg of her medications. History of all previous immunizations with the pfizer vaccine considered as suspect was none. No additional vaccines was administered on same date of the pfizer suspect. Prior vaccinations within 4 weeks was reported as no. Patient had these conditions prolapsed organs (rectal and bladder) for a couple of years. They are now sending her to all of these specialists. Patient had the vaccine last Thursday of last week. Didn't feel different at all until last night when she had the chills. Today, she was very tired. Other than that, she was ok. Patient felt tired but that could be just because she stressed for being so cold. Used her electric blankets, which she usually put on low. Had to put it on medium. Wasn't even that cold outdoors, she doesn't think (As reported). She did go to the hospital on 17Apr2021 and went to the emergency room for gastro problems. Was having off and on diarrhoea and constipation. They didn't give her anything except IV fluids. They didn't really give her meds or anything. One friend of hers who was in pharmacy said maybe she shouldn't get the vaccine until a later time. Just shrugged it off. Has never had a reaction to any vaccine anytime in her life. They didn't really do too much. Was there for hours. It was Saturday 17Apr2021. The diarrhoea and constipation started on the day of 17Apr2021. Thought that it wasn't good, so she went to the emergency room. It stopped later on that week. Commented she was okay now. Medical conditions: Exercises, was very active and not overweight. Have had no problems until recently when she had to go to the emergency room for this problem that she had within the last couple of weeks. That was the first time she has been to the hospital for anything medical in a long time. Vaccination was given in the afternoon. There were no relevant tests. It was reported that Adverse events did not require Emergency Room visit or Physician's office visit. Reporter seriousness for Chills, for feels tired and for arm sore was Unspecified.   No follow-up attempts are needed. No further information is expected.