This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program. The reporter is the patient. A 77 year-old female patient received bnt162b2 (COMIRNATY), administration date 12Oct2021 (Lot number: FF2588) at the age of 77 years as dose 3 (booster), single for Covid-19 immunisation. The patient had no relevant medical history. Concomitant medication(s) included: METOPROLOL. Vaccination history included: Bnt162b2 (DOSE: 1, Lot: EN5318), administration date: 04Feb2021, when the patient was 77 years old, for Covid-19 Immunization; Bnt162b2 (DOSE: 2, Lot: EN6918), administration date: 25Feb2021, when the patient was 77 years old, for Covid-19 Immunization. The following information was reported: NERVOUSNESS (non-serious) with onset Oct2021, outcome "unknown", described as "nervous"; LYMPHADENOPATHY (non-serious) with onset Oct2021, outcome "unknown", described as "swollen lymph nodes". Additional information: Caller states she received her booster dose of the vaccine on 12Oct2021 and is scheduled for a mammogram next Monday, 01Nov2021 which is a day less than 3 weeks from the booster. Caller asks if the dose would affect her mammogram if it's too close together since there is a possible side effect of swollen lymph nodes? Caller states that her manager said her doctor said to wait 3 months after her third shot because it might give a negative test and she has seen that swollen lymph nodes can go wrong. Caller states she has a once a year mammogram and didn't have it during the pandemic year and doesn't want a negative result from the shot but now she is nervous. Caller clarifies that she had no problems, nothing, her neighbor just said that she knows she was getting mammograms so maybe she should wait several months in case of swollen lymph nodes, she might get a bad outcome since it is too soon to the shot. Caller says she has had no problems with shots whatsoever. She says her doctor thought she might ought to wait a bit to get the mammogram, but she hadn't heard of this before and wanted to see if there was information about this. Caller says she was called by the hospital because they were doing Pfizer shots at (withheld) Hospital, her husband also had his and said it was well done there and that she should go get one. She says her concern does have to do with having mammogram, when she looks at list of possible side effects, it does list lymph node swelling, which she didn't even feel her shot and thought she didn't get it, it didn't bother her or her husband, they are old and happy they were able to get theirs. Pfizer COVID-19 vaccine: Caller says her vaccine card is handwritten, with no schedule written for any of her doses. She says her first dose was given 04Feb2021 with LOT EN5318. She says her second dose was 25Feb2021 of LOT: EN6918, and after it had been 8 months she got the booster dose 12Oct2021. She says she can barely read the LOT for the third dose, it looks like FF2588, it is handwritten. Caller says that her husband was in the hospital so she went to medical records department to get her first two doses information. Caller clarifies that her husband didn't get his third dose yet, he should be getting his booster, but he will have to schedule his at (withheld). She says her husband was in the hospital for something else, he is older and during his life he was a smoker and a drinker, so he is in the hospital every three weeks or so. Caller says that this is unrelated to him getting the vaccine and declines to complete a report on him at this time. She requests to speak to someone for her question about her mammogram. No follow-up attempts are possible. No further information is expected.