Pain; Swollen/my fist was start to get swollen a little bit, my arms; It complicated my immune system; Sweating; Decreased appetite; Experienced muscle pain; Chills; Vomiting; Diarrhea; Severe allergic reaction; Headache; Tiredness; Chilly joint pain; Fever; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 38 year-old male patient received bnt162b2 (COMIRNATY), administered in deltoid left, administration date 29Oct2021 (Lot number: FG3527) at the age of 38 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "No" (unspecified if ongoing), notes: No. There were no concomitant medications. Vaccination history included: Bnt162b2 (Dose:01, LOT-FF2587, Anatomical location: right shoulder), administration date: 02Oct2021, when the patient was 38 years old, for COVID-19 immunization. The following information was reported: MYALGIA (non-serious) with onset 03Nov2021, outcome "recovering", described as "Experienced muscle pain"; CHILLS (non-serious) with onset 03Nov2021, outcome "recovering", described as "Chills"; VOMITING (non-serious) with onset 03Nov2021, outcome "recovering", described as "Vomiting"; DIARRHOEA (non-serious) with onset 03Nov2021, outcome "recovering", described as "Diarrhea"; HYPERHIDROSIS (non-serious) with onset 03Nov2021, outcome "recovering", described as "Sweating"; DECREASED APPETITE (non-serious) with onset 03Nov2021, outcome "recovering", described as "Decreased appetite"; PAIN (non-serious) with onset 03Nov2021, outcome "recovering", described as "Pain"; HYPERSENSITIVITY (non-serious) with onset 03Nov2021, outcome "unknown", described as "Severe allergic reaction"; IMMUNE SYSTEM DISORDER (non-serious) with onset 03Nov2021, outcome "unknown", described as "It complicated my immune system"; HEADACHE (non-serious) with onset 03Nov2021, outcome "unknown", described as "Headache"; FATIGUE (non-serious) with onset 03Nov2021, outcome "unknown", described as "Tiredness"; ARTHRALGIA (non-serious) with onset 03Nov2021, outcome "unknown", described as "Chilly joint pain"; PERIPHERAL SWELLING (non-serious) with onset 03Nov2021, outcome "unknown", described as "Swollen/my fist was start to get swollen a little bit, my arms"; PYREXIA (non-serious) with onset 03Nov2021, outcome "unknown", described as "Fever". Therapeutic measures were not taken as a result of myalgia, chills, vomiting, diarrhoea, hyperhidrosis, decreased appetite, pain, hypersensitivity, immune system disorder, headache, fatigue, arthralgia, peripheral swelling, pyrexia.  Additional information: patient experienced severe reaction from the second dose of the Pfizer Covid vaccine he had three days ago. he experienced muscle pain, chills, vomiting, diarrhea, sweating, decreased appetite, pain. Had never had this happen before. States it all started three days after the vaccine, states it is getting better. experienced all through last night to this morning. Patient not able to go for the third dose because this reaction is severe. almost about to call an ambulance because he was literally just laying down the ground. Patient was not known he was immune. just read it now that if you have severe allergic reactions of previous dose, then don't take this vaccine. he just found out now.   Follow-up attempts are completed. No further information is expected.