Stated that the coroner wrote the cause of death as a blood clot that caused a heart attack.; tired; coughing; sinus infection; throwing up; fever/started running a temperature; Stated that the coroner wrote the cause of death as a blood clot that caused a heart attack.; Stated that she went from her blood being thin to as thick as pancake syrup after the second shot; Patient previously received first dose of Moderna shot; This is a spontaneous report from a contactable consumer. A 62-year-old female patient received BNT162B2 [COVID-19 Vaccine-Manufacturer Unknown; Solution for injection; Lot number: unknown] via an unspecified route in left arm on an unspecified date in Feb2021 as single dose for COVID-19 immunization. Medical history of the patient included renal failure [she had been on dialysis for 5 years before the shot. Stated that she had renal failure before the shot. dialysis blood work done on 16Feb2021] and dialysis. Concomitant medications were not reported. Patient previously received first dose of Moderna shot via an unspecified route on an unspecified date in Jan2021 as single dose for COVID-19 immunization and experienced first shot left arm hurt. On an unspecified date in Feb2021, after receiving second dose of vaccination, patient started running a temperature which lasted for five days. On 14Feb2021, patient experienced coughing, throwing, sinus infection and on 15Feb2021 experienced being tired. Reportedly, four days after receiving second dose of vaccination patient started running temperature. The doctor asked patient to rotate with ibuprofen for a few days and during that time it was 98-104. Patient was given medicine for coughing and Zofran to settle her stomach because she was throwing up, all of this was after the second shot. On Friday, patient went to the doctor and they never drew blood work, but patient had blood work from where she does dialysis. The doctor said it was fine, patient worked 40 hours per week and with dialysis and was told that she was healthy despite renal failure. Patient was told that she would be okay in 3-4 days. Two days later on Sunday night at 20:05 patient passed away. The coroner wrote the cause of death as a blood clot that caused a heart attack. Patient did not have an autopsy done. Patient blood was as thick as pancake syrup. Reporter mentioned that sometimes they would pull the needle on dialysis and it would take 30 minutes to stop the bleeding because her blood was so thin. Patient went from her blood being thin to as thick as pancake syrup after the second shot on an unspecified date in 2021. Reporter said it was odd all of the coughing, throwing up, fever and blood thickening that happened after the second shot was given. Patient had been on dialysis for 5 years before the shot and had renal failure before the shot. Dialysis blood work was done on 16Feb2021. Reporter (patient husband) was very observant of wife and takes care of her. After the second shot patient missed whole a week of work [from 15Feb through 21Feb] and had never missed work. Patient was tired, fever, coughing and throwing up. Reporter believes that the medication caused all of these issues.  Patient received treatment in response to the events fever, coughing, sinus infection and throwing up. Outcome of the event blood clot that caused a heart attack was fatal, for fever was recovered/resolved with sequel and for other events were unknown.  Information on Lot/Batch information has been requested.; Reported Cause(s) of Death: blood clots leading to heart attack; blood clots leading to heart attack