Last night she had a bad headache; indigestion; pain on the right side underneath her ribs; very minimal chills and fever; very minimal chills and fever; fatigue; Loss of appetite; Brain fog; Sore injection site; nausea; Bruised arm; Stiff muscle; This is a spontaneous report received from a contactable reporter(s) (Other HCP) from medical information team. The reporter is the patient.  A 77-year-old female patient received bnt162b2 (BNT162B2), intramuscular, administered in arm left, administration date 14Oct2021 12:00 (Lot number: FF2587) at the age of 77 years as dose 3 (booster), single for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. Vaccination history included: Bnt162b2 (First dose:in left arm, Time (24hrs): 2 PM, Site and route of injection:, Anatomical site of injection: Left arm, Route of administration: Intramuscular, Batch/lot number: EN6202), administration date: 02Mar2021, when the patient was 76 years old, for Covid-19 Immunization, reaction(s): "Fever", "chills", "headache", "fatigue", "brain fog", "sore arm", "Loss of appetite", "Sore injection site"; Bnt162b2 (Second dose: in left arm, Time (24hrs): 2 PM, Site and route of injection:, Anatomical site of injection: Left arm, Route of administration: Intramuscular, Batch/lot number: EP6955), administration date: 23Mar2021, when the patient was 76 years old, for Covid-19 Immunization, reaction(s): "Hearing loss", "Muscle disorder", "Difficulty in walking", "Electric shock sensation", "General body pain", "Had trouble moving eye and focusing", "confusion", "Pain under right ribs liver", "Skeletal totally flacid", "burning sensation of skin", "no appetite", "Could not walk or event lift arms", "he got really sick 48 hours after that dose", "fever", "chills", "nausea", "Headache", "Dizzy", "brain fog", "fatigue", "Speech like slurred", "Had trouble moving eye and focusing". The following information was reported: HEADACHE (non-serious) with onset 14Oct2021, outcome "recovered" (Oct2021), described as "Last night she had a bad headache"; DYSPEPSIA (non-serious) with onset 14Oct2021, outcome "recovered" (Oct2021), described as "indigestion"; MUSCULOSKELETAL CHEST PAIN (non-serious) with onset 14Oct2021, outcome "recovered" (Oct2021), described as "pain on the right side underneath her ribs"; CHILLS (non-serious), PYREXIA (non-serious) all with on-set 14Oct2021, outcome "recovered" (Oct2021) and all described as "very minimal chills and fever"; FATIGUE (non-serious) with onset 14Oct2021, outcome "recovered" (Oct2021), described as "fatigue"; DECREASED APPETITE (non-serious) with onset 14Oct2021, outcome "recovered" (15Oct2021), described as "Loss of appetite"; FEELING ABNORMAL (non-serious) with onset 14Oct2021, outcome "recovered" (16Oct2021), described as "Brain fog"; VACCINATION SITE PAIN (non-serious) with onset 14Oct2021, outcome "recovered" (Oct2021), described as "Sore injection site"; NAUSEA (non-serious) with onset Oct2021, outcome "unknown", described as "nausea"; CONTUSION (non-serious) with onset 2021, outcome "unknown", described as "Bruised arm"; MUSCULOSKELETAL STIFFNESS (non-serious) with onset 2021, outcome "unknown", described as "Stiff muscle". It was unknown if therapeutic measures were taken as a result of headache, dyspepsia, musculoskeletal chest pain, chills, pyrexia.  Additional Information: It was reported that patient has one question based on her second Pfizer covid vaccination. When patient had the second vaccination, she had several things that affected her severely. She just got the third shot, the booster shot, she is worried that she will have the severe reaction again. Wondering if she can take over the counter pain meds to help. In her condition she feels so weak and she does not trust herself to sit at the computer. After booster dose: Last night she had a bad headache and indigestion and pain on the right side underneath her ribs. This has subsided somewhat but right now she has very minimal chills and fever. She is afraid what happened after the second dose will repeat again. She is worried. She normally does not take pain meds and does not rely on that sort of thing unless absolutely necessary.   No follow-up attempts are possible. No further information is expected.