Feet are hurting so bad; Chills; Right Ankle is starting to itch on red areas; Left Ankle Swelling; Cramps; Diarrhea; Weakness / she still has no energy whatsoever; Tired; Headache; Chest pain; Swelled Legs / Right Ankle red and swollen; This is a spontaneous report received from a contactable consumer (patient). A 64-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number: EP7533), via an unspecified route of administration in upper left arm on 06Apr2021 as 2nd dose single for COVID-19 immunization. Patient previously received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number: EN6208), via an unspecified route of administration on 13 Mar2021 as 1st dose, single for COVID-19 immunization. Medical history included ongoing fluttering in heart. Concomitant medications were not reported. 07Apr2021, patient experienced, headache. In APR-2021, patient experienced swelled legs. On 07-MAY-2021, patient experienced chills. In May2021, patient experienced, right ankle was starting to itch on red areas. On an unspecified date, patient experienced feet are hurting so bad. Stated she didn't call to report sooner because where she got her vaccine at facility they did not give her any information with Pfizer's number on it. Her husband went and got his vaccine at pharmacy and they gave him the paper with the number on it. Stated her right ankle was really red and swelling (In Apr2021). Says that on 06Apr2021 after her shot, she waited the 15 minutes at the facility and was fine. Stated that around midnight (07Apr2021) she had cramps, diarrhea, weakness, she was tired. A few days later her right ankle began to swell and keeps getting worse. Says now her left ankle is starting to swell. States she also has experienced some chest pain (in Apr2021) and has an appointment the a heart specialist today, 12May2021. Patient stated she reported her symptoms to the Centers for Disease Control and Prevention (CDC). Says it did not seem like they would do anything with her report. Patient stated that she still had no energy whatsoever. She had to really make herself do things that she would normally do. Stated that the diarrhea and cramps that started midnight 07Apr2021 lasted for half that day and then they were gone Patient denies any medications, medical conditions, labs, testing, or treatments relevant to events. Patient stated that her husband had Covid 19 on 07Feb2021. He was in Hospital and they gave him antibodies for a day and a half. She states on 08Feb2021 herself and her son got tested for Covid 19 and it was negative. Says they went back on 13Feb 021 to get tested again and it was negative. Patient stated that they wondered if it was false negative tests. Stated that maybe her and her son had Covid 19 and that's why they are having side effects after the vaccine. she had been to the Emergency Room three times to check for blood clots. States her right leg was really red and really bad. She had been to her family doctor and is going to a Neurologist on 27May2021. The outcome of the events cramps, diarrhea was recovered. Outcome of the events feet are hurting so bad, chest pain was unknown and outcome of the other events was not recovered.    No follow-up attempts are needed. No further information is expected.   Follow-up (26May2021): Follow-up attempts completed. No further information expected.