blood clot it is from my hip all the way down to my left leg to my ankle; blood clot but it is the big one from my hip all the way down to my foot; foot going down the swelling went up to my leg/foot and my leg is swelled my toes all over up to my leg swelled; This is a spontaneous report from a contactable consumer (patient). An 85-year-old female patient received the second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection; Batch/Lot Number: EW0162), via an unspecified route of administration, administered in left upper arm on 10Apr2021 at the age of 85-years-old as single dose for COVID-19 immunization. The patient's medical history included ongoing arthritis and ongoing chronic obstructive pulmonary disease (COPD). The patient reported that she was not taking anything for arthritis, just some Tylenol once in a while over the counter (it was not prescription). The patient was taking an inhaler for COPD. The patient was taking unspecified concomitant medications. The patient previously received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection; Batch/Lot Number: ER2613), administered in left upper arm on 20Mar2021 at the age of 85-years-old for COVID-19 immunization and experienced bladder infection and viral infection. The patient got the first Pfizer vaccine on 20Mar2021 and was alright for a few days afterwards. Then all of a sudden, she started getting infections on 28Mar2021, 8 days after she had the first vaccine. She got a real bad bladder infection then she went to the doctor and she got medication for that. She was with bladder infection then she came down with the viral infection. The patient reported that she has not even been going anywhere because of the virus and she has been staying home. She just goes to the grocery store and clinic to the doctor, that was it. The patient had an antibiotic for the bladder infection. Sulfamethoxazole was the name of the medication that was for bladder infection. They didn't give the medication for the viral infection. The patient reported that it was just a viral infection, it was not the Covid. Since then, she had her second dose of the vaccine on 10Apr2021 and from an unspecified date in 2021, her foot started, her foot swelled up and she didn't know. She takes lot of retention pills, so she thought maybe it was that. So she took her pills and everything and washed and start getting but the next day instead of the foot going down, the swelling went up to her leg and then the next day it went all away up to her hip. The swelling on the left side from the foot all away up to the hip. She went to urgent care on 21Apr2021 (reported as "21st") and saw a doctor and she was tested and she had blood clots. Regarding lab test, the patient reported she had two infections and then she got the blood clot that was from her hip all the way down to her left leg to her ankle. She could not figure out that they called the test and what they tested. But they had a lab work done then one has a test, veins, and everything. She can't remember. The patient reported that her foot and her leg was swelled, her toes all over up to her leg swelled. She had a fat foot and a fat leg just one side. She would say since she has started taking medicines for that, she took the first dose at the evening of 21st (21Apr2021), the day she went to the urgent care, and she would say it was not any worse. The medication was supposed to break up the blood clot, but it was the big one from her hip all the way down to her foot. Just a little bit better. The outcome of the events was recovering.