Terrible joint pain: Reporter stated it is the fingers, joints, knees; swollen wrist, ankles and feet black and blue and swollen; low fever; ankles and feet black and blue and swollen; ankles and feet black and blue and swollen; orthopedic guy said the daughter has arthritis; Terrible joint pain: Reporter stated it is the fingers, joints, knees; Swollen wrist, Terrible joint pain, ankles and feet black and blue and swollen was reported as worsened; This is a spontaneous report from a contactable consumer. This consumer reported for 2 patients. This report is for 1 of 2 patients. A 33-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, solution for injection, Batch/Lot Number: not reported, Expiry date: unknown) via an unspecified route of administration, administered in Arm on an unspecified date, in the morning (at the age of 33-year-old) as dose 1, single for covid-19 immunization administered at School. Family medical history relevant to AE(s) was none. Prior Vaccinations (within 4 weeks) was none. The patient medical history was none. The concomitant medications were not reported. The patient just had a baby and was breastfeeding. Reporter stated her daughter is 125-130, very healthy. Her daughter was having a severe reaction to the COVID 19 shot. Stated the daughter had terrible joint pain, feet were swollen almost black and concerned as she does not want to lose her feet. Stated this had started after her first vaccine, a little bit, and the second shot, every joint she got hurts and was swollen, and she was breastfeeding, crying and has a 4-month-old. Stated her daughter ankles look like they are broken and doctor said it is the tissues in the skin not underneath. Stated she did not know if breastfeeding and hormones sent her daughter to the bed. Wanted to know if medical information would they tell her if her daughter should get an epi shot. Stated the anti-inflammatory and arthritis did not help it. Two days after first shot the patient experienced terrible joint pain (ongoing and it has worsened day by day. It was the fingers, joints, knees); Low fever (she is unsure if it is still going on but she knows she had it for two days); Ankles and feet black and blue and swollen (ongoing and feet were very swollen and guess it is the blood coming out black and blue like sprained or broken foot). The patient reported, swollen wrist started after the first vaccine and thought it was regular and the orthopedic guy said it was arthritis and after the second shot everything went wacko. This was still going on and it has worsened. Orthopedic doctor gave her daughter an anti-inflammatory but things got so much worse. Stated the daughter just took Tylenol the last two days because she is afraid to take anything. Stated her daughter shows pictures of legs and not sure if feet will fall off but she was concerned with it. Stated her daughter went to an urgent care and said there were no blood clots and no vein problems there was nothing wrong with her and did not known why tissue was so swollen. Outcome of the event low fever, arthritis and swollen wrist, terrible joint pain, ankles and feet black and blue and swollen was reported as worsened was unknown and all other events were not recovered.  No follow-up attempts are possible; information about lot/batch number cannot been obtained.; Sender's Comments: Linked Report(s) : US-PFIZER INC-2021326717 Different patient, same drug, Different event (split)