felt the blood clot coming up her leg and it was very painful.; saw something coming up her leg and she stated that this is a blood clot; Blood clot bouncing around her whole entire body; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 59-year-old female patient received BNT162b2 (BNT162B2), on 27Oct2021 as dose 2, single (Lot number: FF2590, Expiration Date: 31Mar2022) at the age of 59 years, in right arm for covid-19 immunisation. The patient's relevant medical history included: "Developed an allergy to shellfish" (unspecified if ongoing); "peanut butter" (unspecified if ongoing); "Obase" (unspecified if ongoing), notes: Onset Date: Obese: Not provided. Concomitant medication(s) included: FLU. Vaccination history included: BNT162b2 (Dose 1, Single, Lot number: EW0176, Expiry: Nov2021), administration date: 06Oct2021, when the patient was 59-year-old, for COVID-19 Immunization; Flu shot (Caller states she received the flu shot last year and received this year also), administration date: 2021. The following information was reported: THROMBOSIS (hospitalization, medically significant) with onset 21Nov2021, outcome "recovered" (Dec2021), described as "Blood clot bouncing around her whole entire body"; THROMBOSIS (hospitalization, medically significant) with onset 21Nov2021, outcome "recovered" (Dec2021), described as "saw something coming up her leg and she stated that this is a blood clot"; PAIN IN EXTREMITY (hospitalization, medically significant), outcome "unknown", described as "felt the blood clot coming up her leg and it was very painful.". The events "saw something coming up her leg and she stated that this is a blood clot", "blood clot bouncing around her whole entire body" and "felt the blood clot coming up her leg and it was very painful." required emergency room visit. The patient underwent the following laboratory tests and procedures: Ultrasound scan: (21Nov2021) Blood Clot, notes: Result: Blood Clot / Hematoma;  Unit: Not Provided. Therapeutic measures were taken as a result of thrombosis, thrombosis, pain in extremity.  Clinical course: It was reported that the patient had blood clot developed in her right leg, then came through her groin. She was calling because she was being tracked down for a medical bill because she got her shot on 10Oct2021 and a follow up shot on 27Oct2021.Caller states on 21Nov2021 she had a blood clot develop in her leg at work. Caller states she went to the Emergency Room and had an ultrasound. Caller clarified that the Emergency Room requested an ultrasound, they did the ultrasound and said there was a blood clot. Caller states she had never had a blood clot before and has never had one after. Caller states the Emergency Room said there was nothing they could do and gave her three pain pills and said that was all they could do. States they told her it would dissolve in her body. Caller states she felt the blood clot bouncing around her whole entire body, when it came from her groin in her leg and it pushed out through something and was bouncing around. Caller states it developed in her groin. Caller states that the blood clot is still bouncing around.  Caller clarified that the blood clot dissolved. Caller states she does not know how long after it dissolved, a couple days, maybe a couple weeks. States she has not had any problems since then. She was at one hospital for 8 hours and they did nothing and so she went to another.  Caller states the other hospital within 30 minutes she had an ultrasound. States she could have probably died at the other one. States they are also coming after her for a bill even though they didn't do anything in the ER and she was at the first hospital from 9 to 3 and then she went to another hospital. Caller clarified the times to 9am to 3pm.  Caller states that she had a long wait, especially for a blood clot. Blood clot in right leg Start Date: Caller states it was a day before Holiday. Caller clarified that the date was November something. Caller states she knows it was a Tuesday. Caller clarified the date to 21Nov2021. Caller states the blood clot came through her groin then it was in her body. Caller states the blood clot dissolved. Caller states she didn't feel the blood clot in her body for maybe a month even, not even. Caller states she doesn't want to give an exact date. Caller states the blood clot dissolved between November and December. Caller states the blood clot might still be there.  Caller clarified end date to Dec2021. Caller states that she received the flu shot after the doses of COVID 19 Vaccine.  Caller states she received the flu shot last year. Caller clarified the flu shot was received this year, just a regular flu shot and she had no problems with that. She developed an allergy to shellfish and peanut butter, onset Age: 46, she had to do basic shots for healthcare. Pfizer COVID 19 Vaccine Dose 1, Vaccine Lot Number: EW0176, Vaccine Lot Expire Date: Nov2021.