Pain under armpit; hurting; I am sick; Headache; Swelling in the area where I was injected; The most pain is in my armpit and the area where I had the vaccine; Have redness on the injection site; Last night when I went to bed I felt like warm; Sweaty; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 64 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 27Sep2021 16:00 (Lot number: 30145BA, Expiration Date: 28Feb2022) at the age of 64 years as dose 3 (booster), single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Bnt162b2 (Dose 1, single), when the patient was 64 years old, for COVID-19 Immunization, reaction(s): "had not side effects with the first shot"; Bnt162b2 (Dose 2, single), when the patient was 64 years old, for COVID-19 Immunization, reaction(s): "Fever". The following information was reported: AXILLARY PAIN (non-serious) with onset Sep2021, outcome "recovering", described as "Pain under armpit; hurting"; ILLNESS (non-serious) with onset Sep2021, outcome "unknown", described as "I am sick"; HEADACHE (non-serious) with onset Sep2021, outcome "unknown", described as "Headache"; VACCINATION SITE SWELLING (non-serious) with onset Sep2021, outcome "recovering", described as "Swelling in the area where I was injected"; VACCINATION SITE PAIN (non-serious) with onset Sep2021, outcome "recovering", described as "The most pain is in my armpit and the area where I had the vaccine"; VACCINATION SITE ERYTHEMA (non-serious) with onset Sep2021, outcome "recovering", described as "Have redness on the injection site"; FEELING HOT (non-serious) with onset Sep2021, outcome "unknown", described as "Last night when I went to bed I felt like warm"; HYPERHIDROSIS (non-serious) with onset Sep2021, outcome "unknown", described as "Sweaty". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of axillary pain, illness, headache, vaccination site swelling, vaccination site pain, vaccination site erythema.  Additional information: consumer stated that I took the Booster shot (Covid-19 Vaccine) yesterday and experiencing pain under my armpit all day long and take Tylenol (250 mg three times a day; treatment) all day long. Consumer stated, Yes, I had not side effects with the first shot but with second one I had fever. Consumer stated, Yes, I also had a slight headache, swelling in the area where I was injected and have redness on the injection site. Consumer stated, Last night when I went to bed I felt like warm, I did check my temperature but all I felt like sweaty and slight headache. Consumer stated, I take Tylenol, the most pain is in my armpit and the area where I had the vaccine. It is a little swollen on my arm and it got a red spot on it. It did improve with Tylenol, once it stop hurting. Booster vaccination timing, consumer stated, I got it yesterday about 4 pm. No Prior vaccination (within 4 weeks).  Follow-up attempts are completed. No further information is expected.