Did not feel good; felt achy; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 82 year-old female patient received bnt162b2 (BNT162B2), administered in arm right, administration date Feb2021 (Batch/Lot number: unknown) at the age of 82 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Rheumatoid arthritis" (unspecified if ongoing), notes: Verbatim: Rheumatoid arthritis; "Cardiac failure congestive" (unspecified if ongoing), notes: Verbatim: Congestive heart failure. Concomitant medication(s) included: HYDROCHLOROTHIAZIDE (ongoing); PLAVIX (ongoing); ARMOUR THYROID taken for thyroid disorder (ongoing). Vaccination history included: Bnt162b2 (Dose:1, Manufacturer unknown), for COVID-19 Immunization. The following information was reported: FEELING ABNORMAL (non-serious) with onset Feb2021, outcome "unknown", described as "Did not feel good"; PAIN (non-serious) with onset Feb2021, outcome "unknown", described as "felt achy".  Additional Information: The patient administered Moderna Covid Booster in right arm, exact dose unknown, but thought the 60grams (Batch/Lot number/Action(s) taken with drug: unknown). On 08Dec2021 She got the wrong one, Moderna Covid Booster, instead of the Pfizer, in the afternoon and by that evening she felt horrible that night and yesterday. She had a headache, initially described as chest pain, ached all over, had no energy at all, did not feel like eating. She then further clarified and stated she does not know if it's chest pain or upset stomach, its not down in her stomach, stated she does not know/shes not sure. Outcome of events confirmed events had improved , gotten better that day. after she could not do anything but sleep, she was up and going. Reporter seriousness for Moderna Covid Booster- felt horrible: Unspecified. Moderna Covid Booster was only provided with pamphlet from Pfizer. Was not given Moderna. It was only written on her information that she got wrong dose. Pfizer Covid Shot a Pfizer product was Unspecified. Pfizer Covid Shot manufacturer was Unspecified. Start and Stop dates for Pfizer Covid Shot was Unspecified. NDC number of Pfizer Covid Shot Unknown. Reason for no lot number: of Pfizer Covid Shot: Complainant does not have the product with them at the time of call hence lot number not provided. Expiry date unknown. Start dates for Concomitant Products Hydrochlorothiazide was unknown and ongoing. It was taken for water pill. Start date for Concomitant Products Plavix  was unknown and ongoing, Indication: 2002 had an MRI and one side back of head almost closed, probably from an accident. Start dates for Concomitant Products Armour was unknown and ongoing, It was taken for Thyroid pill. The patient got two of the Pfizer Covid shots, After the second one she had a reaction with stuff also. At end of call, caller added her sister came up positive for covid and she was with her on Sunday and she did not know if that has any effect or not. No additional details provided by the sister. No additional Vaccines Administered on Same Date of the Pfizer Suspect: None. She did not took any vaccine Prior Vaccinations (within 4 weeks). No other Relevant Tests was done.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.