Lymph node swelling under her armpit by midnight that same day.; groin achiness; nauseated; headache; Pain in that triangular area which included the lymph nodes on her chest and armpit; right side collar bone area swelling; achy; This is a spontaneous report received from a contactable female Consumer (patient) via medical information team.A 64-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, formulation: Solution for injection, Lot number: EN6207, Expiry date:unknown) via an unspecified route of administration, administered on right arm on 12Mar2021 13:45 (at the age of 64-year-old) as dose 2, single for COVID-19 immunization. Medical history included breast cancer, Irritable bowel, Pre-diabetic, Hypertension, Lymphedema, from an unknown date and unknown if ongoing. Double Mastectomy was in 2009 for an unknown indication. Concomitant medications included Valsartan(DIOVAN) via an unspecified route of administration indicated for Hypertension from an unknown date and unknown if ongoing, Leothyroxine sodium (SYNTHROID) via an unspecified route of administration for thyroid from an unknown date and unknown if ongoing ,Rosuvastatin calcium (CRESTOR) via an unspecified route of administration for Lowers Cholesterol from an unknown date and unknown if ongoing, METFORMIN via an unspecified route of administration for prediabetic from an unknown date and unknown if ongoing, MESALAMINE -400mg via an unspecified route of administration for Irritable bowel from an unknown date and unknown if ongoing. Historical vaccine included BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, formulation: Solution for injection, Lot number: not reported, Expiry date: unknown) via an unspecified route of administration, administered on right arm on 19Feb2021 13:40 (at the age of 64-year-old) as dose 1, single for COVID-19 immunization. Patient experienced headache, she was fine from that. It was reported that midnight on 12Mar2021 patient felt the tenderness as well as swelling on the Right Side. Patient always avoided the Left arm because she experienced Lymphedema following a double mastectomy. In about less than 48 hours she was doing her usual palpations and felt sensitivity with the nodes. Patient had Lymph node swelling under her armpit by midnight that same day. Patient had breast cancer in past on right side and so she does palpitations on the Lymph nodes regularly. When her lymph node was getting achy, she saw it was swollen, it was there all through out Saturday but dissipated on 13Mar2021 by midnight. It lasted for 24 hours under her right armpit which was the arm she got the shot (achiness then dissipated in 24 hours). Patient felt achy, nauseated, and had a headache that Saturday. After a week, the Lymph node swelling under her right armpit appeared again out of nowhere.There was a little swelling on her collarbone again. Last night she felt headachy, aching, not energized and a pain in that triangular area which included the lymph nodes on her chest and armpit. The Sensitivity and achiness lasted 24 hours. Then on 19Mar2021 this reoccurred on the right side, her collar, the lymph node, and in the groin as well. The going has no swelling but just achiness. Primarily it is her armpit and collar bone area. Patient stated a week went away, today 1 week, and out of the blue, she began to experience soreness and swelling under the arm, it was like round 2, it was swollen under the collar bones, in the same arm from the vaccine, she had an annual check-up and she was fine yesterday, the doctor felt around collar bone, but the swelling occurred today, she felt tenderness in the joint and groin. Everything was still ongoing, she thought it was actually getting a little better and not worse, which is good, she is just surprised that it reoccurred. Patient queried that what should she look for to know if this was serious. Patient also queried if this has been reported before as a 2nd wave of symptoms like she had been hearing from her friends that got the 2nd dose of the Pfizer vaccine, they felt a little under the weather. She also read that there was a possibility that 16% of women can get swollen lymph nodes and might cause a false positive for mammograms. Patient was concerned about this because she was a former breast cancer patient. Patient underwent Lab test and procedures which included Blood work CBC-Unknown. Outcome of the event right side collar bone area swelling not recovered. Outcome of the events was recovering.  Reporter seriousness for right side armpit lymph node achiness and sensitivity, right side collar bone area swelling and groin achiness: Unspecified.   Lot/batch number is not available despite the follow-up attempts made. Follow-up attempts have been completed and no further information is expected.