inflammation/inflammation on her  right side of waist and in the back down in to pelvis, ovary and groin area; pain in her arm; muscle pain; pain; Her arm bothered her: she could not lift her arm; This is a spontaneous report from a contactable consumer (patient). A 81-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration, administered in Left Arm on 29Jan2021 (Batch/Lot Number: EL9262) as single dose for covid-19 immunisation (Indication: Felt that getting COVID at her age would be worse than getting a possible reaction to the vaccine). Patient had an allergic reaction to the swine flu vaccine in 1979-1980. Patient had muscular problems that resulted from the Swine Flu shot. She had weakened muscle. Most of the time she was okay, but she was more prone to getting back pain and stuff, not pain on her side and on the front side like she has now. Patient wanted to know if the swine flu shot and the covid 19 vaccine had similar ingredients. The Swine Flu shot was back in 1979 or 1980. This is the only type of flu vaccination she has ever had. She did not take more after that. She does not have a lot number to provide. She does know though, that a lot of people at that time came down with (Name) from that vaccine. With this vaccine, nobody seems to be getting strong side effects from it. No Other Products. Patient History reported as No. No Investigation Assessment. The patient medical history and concomitant medications were not reported. The patient experienced pain in her arm statin she could not raise her arm for a day. Her arm bothered her: she could not lift her arm on 30Jan2021and recovered on 31Jan2021. The patient experienced a day later pain and inflammation on her right side of waist and in the back down in to pelvis, ovary and groin area muscle with not recovered (reported as worsened). Caller stated that it was quite painful describing the pain as muscle pain and inflammation. Caller stated that this pain had not gone away. Caller stated she was due for her second dose and wanted to know if she should get the second dose based on her side effects to the first dose. The patient was having to take anti-inflammatory medications for the pain associated with her side effects to the covid 19 vaccine. Patient thought she had a reaction to the Pfizer COVID Vaccine. The day after she had the usual side effect of her arm bothering her. Then she started to experience pain and inflammation around her right side from the waist area down to the front of her pelvis to her groin muscle. It seems like pain and inflammation. It has not gone away. If patient stays home and did nothing she felt a little better. If she took an anti inflammatory she also felt a little better. If she was going out and doing something it flares up. That was why she felt it was muscular, it felt inflamed. Caller stated that it overall had gotten worse in the last few days. She was doing more things than the first couple of days. Treatment: The anti inflammatory was Diclofenac 25mg. She had also been taking Tylenol at night. She said that it does not make the pain completely go away, but it helps keep the pain tolerable. Did not have either of these medications on hand to provide the lot numbers. The outcome of event Her arm bothered her: she could not lift her arm was recovered on 31Jan2021, of other events was not recovered.