Pain under her arm and under her breast and now it is on the top of the breast and on the side, and around her breast she feels pain and on the inside too; Pain under her arm and under her breast and now it is on the top of the breast and on the side, and around her breast she feels pain and on the inside too; This is a spontaneous report from a contactable consumer (patient). A 57-year-old female patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Formulation: Solution for injection, Batch/Lot number: FA6780, Expiry date: not reported), via an unspecified route of administration in left arm on 10Aug2021 (in the afternoon) (Vaccination at the age of 57 years) as dose 1, single for covid-19 immunisation. The patient's medical history and concomitant medications were not reported. Patient's medical history (including any illness at time of vaccination) were none. Family medical history relevant to adverse events were none. History of all previous immunization with the bnt162b2 vaccine considered as suspect was none. Additional vaccines administered on same Date of the bnt162b2 suspect were none. The patient had not received any other vaccine within 4 weeks. Adverse events following prior vaccinations were none. On an unspecified date in Aug2021, the patient experienced pain under her arm and under her breast and it was on the top of the breast and on the side, and around her breast she feels pain and on the inside too. The patient was there night of reporting date to receive her second dose of the bnt162b2 vaccine. She received her first dose on 10Aug2021 and experienced left under arm pain that goes to her left breast. It was more painful if she touched the area. It had continued since her first dose. She received her first dose in her left arm. Caller stated the last time she took her first dose of the vaccine, she started having pain under her arm and under her breast and now it was on the top of the breast and on the side, and around her breast she felt pain and on the inside too. Caller stated she first felt the pain under her arm and then felt the pain under her left breast and now it was under and on top of the breast and if she touched it, she felt it on the top of her breast and inside of there, and sometimes she felt it going through from the front to the back. Caller stated day of reporting date was her second dose that she had to take today. Caller wondering if it as normal and could she take it or does she have to wait. Called stated that she called her doctor yesterday and told them she was feeling the pain, and they said it may be from the vaccine because she felt it only after the vaccine. She called her Primary care provider day before reporting date and was advised that this might be a side effect from the vaccine and to take Ibuprofen. She took her dose before going to sleep, but when she woke up the pain was still there. The caller was going to follow back up with her Primary Care Provider the evening of reporting date. Caller was asking was that been reported after receiving the bnt162b2 vaccine, and should she receive her second dose that evening. Caller stated yesterday her doctor told her to take Ibuprofen, so she took Advil but she did not see any change or feel any different. (Advil UPC, Lot: Unknown Expiration: Aug2023). Relevant tests were none. Therapeutic measures were taken as a result of the events. The outcome of the events was not recovered.  No follow-up attempts are possible. No further information is expected.