my arm feels tight and heavy; Swelling under the armpit; the lymph node was swollen; I have pain and discomfort under my armpit; Pain on the injection site; the injection site is swollen; This is a spontaneous report received from a contactable reporter(s) (Other HCP). The reporter is the patient.  A 46 year-old female patient received bnt162b2 (BNT162B2), administration date 04Dec2021 (Lot number: FG3527, Expiration Date: 28Feb2022) at the age of 46 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: 2), for COVID-19 Immunization; Bnt162b2 (Dose: 1), for COVID-19 Immunization. The following information was reported: LIMB DISCOMFORT (non-serious) with onset 06Dec2021, outcome "not recovered", described as "my arm feels tight and heavy"; SWELLING (non-serious) with onset 06Dec2021, outcome "unknown", described as "Swelling under the armpit"; LYMPHADENOPATHY (non-serious) with onset 06Dec2021, outcome "unknown", described as "the lymph node was swollen"; AXILLARY PAIN (non-serious) with onset 06Dec2021, outcome "not recovered", described as "I have pain and discomfort under my armpit"; VACCINATION SITE PAIN (non-serious) with onset 06Dec2021, outcome "unknown", described as "Pain on the injection site"; VACCINATION SITE SWELLING (non-serious) with onset 06Dec2021, outcome "unknown", described as "the injection site is swollen".  Additional information: Nurse stated, "I am calling because I got Pfizer booster shot on Saturday and this morning, I am woken up with lymph nodes swollen, discomfort in right armpit under that arm that I had the injection, I am swollen so I have like the lymph nodes at it after seeing in mirror." When paraphrased the concern, consumer stated, "I am having swelling under the armpit, the lymph node was swollen. I have little pain on the injection site, the injection site is swollen but not as bad but under my armpit the lymph node is swollen as it is uncomfortable." Nurse was informed about Pfizer Drug Safety Department. Consumer stated, "No, there is no UPC." Nurse stated, "I was taking Pain medicine, I mean like Tylenol, not Tylenol, Excedrin but why is that relevant for this? I am asking you why is that relevant to this? No, I am not taking any medicine" (further clarification unknown). When informed about Pfizer Medical Information Department, Nurse stated, "Yeah, just connect me to that department and you say that number is for what?". Call transfer to MI was unsuccessful and Nurse was requested to contact MI on the shared number. Patient didn't have any lab test. The patient did not have any vaccination prior vaccination Covid-19 vaccine (within 4 weeks). NDC number of COVID-19 vaccine was 59267-1000-02. Investigation Assessment: No.   COVID-19 vaccine: Swelling under the armpit, the lymph node was swollen; I have pain and discomfort under my armpit and my arm feels tight and heavy, Pain on the injection site and the injection site is swollen - Related  Causality: Nurse stated, "Yes, I do. I haven't had any issue with me in the past."  No follow-up attempts are possible. No further information is expected.