Menstrual cycle started 7 days early; Night sweats; chills or being overheated; Coughing; Loss of appetite/ decreased intake; nausea with serving sizes greater than a cup; severe shivering/riggers on 2 occasions lasting 15-25 minutes; fevers (100.4 - 102.5) degrees; Hot/cold body flushing; Malaise; body aches; headache; Prev dose brand=Moderna; This is a spontaneous report received from a contactable reporter(s) (Pharmacist). The reporter is the patient.  A 45-year-old female patient (not pregnant) received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 10Nov2022 at 07:45 as dose 4 (booster), single (Lot number: GH9697) at the age of 45 years, in right arm for covid-19 immunisation. The patient's relevant medical history included: "hypothyroid" (unspecified if ongoing). Concomitant medication(s) included: FLUCELVAX taken for immunisation, on 21Oct2022 as dose 1, single; LEVOTHYROXINE; CETIRIZINE. Vaccination history included: moderna (DOSE 1, SINGLE , Lot number=039K20-2A), administration date: 23Dec2020, when the patient was 43-year-old, for COVID-19 immunization; moderna (DOSE 2, SINGLE , Lot number=030L20A), administration date: 20Jan2021, when the patient was 43-year-old, for COVID-19 immunization; moderna (DOSE 3 (BOOSTER), SINGLE , Lot number=077C21B), administration date: 30Dec2021, when the patient was 44-year-old, for COVID-19 immunization. The following information was reported: INTERCHANGE OF VACCINE PRODUCTS (non-serious) with onset 10Nov2022, outcome "unknown", described as "Prev dose brand=Moderna"; FLUSHING (non-serious) with onset 11Nov2022, outcome "not recovered", described as "Hot/cold body flushing"; MALAISE (non-serious) with onset 11Nov2022, outcome "not recovered"; PAIN (non-serious) with onset 11Nov2022, outcome "not recovered", described as "body aches"; PYREXIA (non-serious) with onset 11Nov2022, outcome "not recovered", described as "fevers (100.4 - 102.5) degrees"; HEADACHE (non-serious) with onset 11Nov2022, outcome "not recovered"; CHILLS (non-serious) with onset 11Nov2022, outcome "not recovered", described as "severe shivering/riggers on 2 occasions lasting 15-25 minutes"; DECREASED APPETITE (non-serious) with onset 13Nov2022, outcome "not recovered", described as "Loss of appetite/ decreased intake"; NAUSEA (non-serious) with onset 13Nov2022, outcome "not recovered", described as "nausea with serving sizes greater than a cup"; COUGH (non-serious) with onset 14Nov2022, outcome "not recovered", described as "Coughing"; NIGHT SWEATS (non-serious) with onset 15Nov2022, outcome "not recovered"; FEELING HOT (non-serious) with onset 15Nov2022, outcome "not recovered", described as "chills or being overheated"; MENSTRUATION IRREGULAR (non-serious) with onset 18Nov2022, outcome "not recovered", described as "Menstrual cycle started 7 days early". The events "severe shivering/riggers on 2 occasions lasting 15-25 minutes", "fevers (100.4 - 102.5) degrees", "hot/cold body flushing", "malaise", "body aches", "headache", "loss of appetite/ decreased intake", "nausea with serving sizes greater than a cup", "coughing", "night sweats", "chills or being overheated" and "menstrual cycle started 7 days early" required emergency room visit. Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of chills, pyrexia, flushing, malaise, pain, headache, decreased appetite, nausea, cough, night sweats, feeling hot, menstruation irregular.Patient on day 10 of fevers (100.4 - 102.5) degrees Fahrenheit using oral thermometer. Requiring doses of acetaminophen 325mg plus ibuprofen 400mg every 4 hours. Hot/cold body flushing, shivering, severe shivering/riggers on 2 occasions lasting 15-25 minutes. Malaise, body aches, and headache not relieved by acetaminophen or ibuprofen. Loss of appetite started on day 4, nausea with serving sizes greater than a cup, and decreased intake. Coughing started on day 5; semi-controlled with dextromethorphan 30mg up to 4 dose/per day, plus lemon honey tea. Night sweats started day 6, sweats soak through clothing once a night requiring clothing changes, followed by additional dry awaking due to chills or being overheated. Menstrual cycle started 7 days early, on day 9, which has never happened before. Negative home COVID tests on day 5 and 9. Negative rapid Flu and COVID taken at Urgent Care on day 6, COVID send out also negative.