she had swelling in her lymph node under her armpit/ her collar bone felt like grapes. Her lymph nodes are swollen there; lymph node swelling under arm and by collar bone and mmm inferior biceping; Dose Number:3; on the inside of her left bicep, and her whole left arm is painful; The side effects have progressively worsened; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 44 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 03Jan2022 (Lot number: FL3198) at the age of 44 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, lot number: EL3247), administration date: 02Mar2021, when the patient was 43 years old, for COVID-19 immunization, reaction(s): "swelling in her lymph node under her armpit"; Bnt162b2 (Dose: 2, lot number: EP6955), administration date: 24Mar2021, when the patient was 43 years old, for COVID-19 immunization, reaction(s): "swelling in her lymph node under her armpit", "on the inside of her left bicep, and her whole left arm is painful/Her bicep started to hurt"; Flu shot, for Immunization. The following information was reported: IMMUNISATION (non-serious) with onset 03Jan2022, outcome "unknown", described as "Dose Number:3"; PAIN (non-serious) with onset 04Jan2022, outcome "recovering", described as "lymph node swelling under arm and by collar bone and mmm inferior biceping"; LYMPHADENOPATHY (non-serious) with onset 05Jan2022, outcome "not recovered", described as "she had swelling in her lymph node under her armpit/ her collar bone felt like grapes. Her lymph nodes are swollen there"; PAIN IN EXTREMITY (non-serious) with onset 03Jan2022, outcome "not recovered", described as "on the inside of her left bicep, and her whole left arm is painful"; CONDITION AGGRAVATED (non-serious) with onset 03Jan2022, outcome "not recovered", described as "The side effects have progressively worsened". Therapeutic measures were taken as a result of pain, lymphadenopathy, pain in extremity, condition aggravated.  Additional information: It was reported that, she had the first Pfizer COVID vaccine, and the same exact thing happened, and it never resolved until after her second COVID vaccine. Now since the COVID booster, she was experienced the same thing. She reported it once, but it didn't resolve until after the second vaccine . But it did eventually resolve. Her side effects did the same exact thing. She knows that it was a known side effect. The side effect happened on the same side as the vaccine was given. It was on her left arm, the vaccine and side effect. About 15-20 hours after her COVID booster, she had swelling in her lymph node under her armpit. So her axillary lymph nodes were swollen. Her armpit was the size of a soft ball cut in half. It was really big. Then, this morning around 3 am which was about 36 hours after, her collar bone felt like grapes. Her lymph nodes were swollen there. Then, on the inside of her left bicep, and her whole left arm was painful. The pain was minimal but it was enough to know it was there. It was going on. The side effects have progressively worsened. It was subtle pain at first. She didn't know if she needed to report at that point. But then when she noticed her armpit was the size of a softball in half, and then her neck and collar bone swelling this morning she decided to call. Her bicep started to hurt. This was the same thing that happened last time. It was getting worse. Actually, it only lasted a month/ month and a half last time. She also got the flu shot . She don't know if that was important or not. Her collar bone swelling and the inside of her arm pain started today. The lymph node under her arm  started swelling 20 hours after the vaccine. It has been about 15 hours since the first onset of symptoms. She has been taking Advil, and it works. She was just treating the pain. She was not concerned. She knows this could be expected. She does want to note the website was not working. It was reported that, lymph node swelling under arm and by collar bone and mmm inferior biceping. The report was self-reported.  She started to experience the symptoms on 04Jan2022 and reported the AE on 05Jan2022 about 15 hours after the onset of the first symptom.