Injection site pain; the arm felt heavy; Aches and pains/the pain extended from her shoulder down to her elbow; aches and pains/pain went from the injection shoulder and spread to the middle of her spine; aches and pains/pain went from the injection shoulder and spread to the middle of her spine; Nausea; total loss of appetite; stated that she gained 10lbs, but she is very physically active.; either not making blood or there was an interference; she was freezing/she woke up cold and could not get warm/ felt cold; she had a little headache; This is a spontaneous report from a contactable consumer (patient). A 72-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Batch/lot number: EJ1685, Expiry Date: Mar2021), intramuscular at left arm on 31Dec2020 at single dose for covid-19 prophylaxis. Medical history included low sodium, Covid-19 in Nov2020 (She had felt sick for a week and on 13Nov2020 she went to the ER and they did blood tests and she could not eat or drink for 3 days. She stated that she had 4 different IV fluids going and one of them was sodium and the other was for nausea), blood did not clot properly, broke her back. There were no concomitant medications.The patient had a unique reaction after receiving the Covid-19mRNA Vaccine. She clarified that she never had a reaction to a shot before. She received the vaccine on 31Dec2020 and was fine for the first 20 hours. She said that the next morning on 01Jan2021 at 0600 she woke up cold  and could not get warm. She said that she spent the next 24 hours to where she kept adding clothes and blankets to keep warm. She stated that she was freezing and the she felt like the interior of her body was freezing even down to her toes felt cold. She also had injection site pain and the arm felt heavy and stated that the pain extended from her shoulder down to her elbow. She stated that the injection site pain was kind of delayed. She had aches and pains. She said that some of the pain went from the injection shoulder and spread to the middle of her spine. She had nausea and total loss of appetite and could not even eat. Her aches and pains after the vaccine were similar aches like she had with the Covid. She said that she had a terrible headache when she had Covid though. She stated that after the 24 hours of receiving the vaccine she had a little headache, but she took a migraine pill for it. She said that she was able to shed clothes, but she could not take a shower, but within 24-36 hours she was back to normal like it all never happened. She said that was when she figured out it was like her hemorrhaging with one of her childbirths. She explained that she had 3 children and hemorrhaged with each of her child births and was going into shock with one of them and felt this freezing sensation due to blood loss. She thought that her reaction to the vaccine was so bad that she was either not making blood or there was an interference. There was some kind of weird interruption. She said that her blood clots break down from minutes to hours after her child birth or with dental procedures. She had a PAI-1 deficiency or Plasminogen Activator Inhibitor-1 deficiency. She said that there was also something deeper that her doctors had not figured out yet too. She said that her blood did not clot properly. She said that she did not bruise or anything, but she was not allowed to have internal surgery without a transfusion. She said that her doctor's started to figure this all out after she broke her back before. She went to a hematologist and had her counts checked regularly. She said that she was being studied by 127 different clinics. She gained 10lbs, but she was very physically active. This was her first dose of teh vaccine. She said that her doctors told her that she needs to be under 48 hours of observation if she gets the second vaccine. Her primary care physician recommended that she did not take another mRNA vaccine. She said that she was taking their advice and canceled her second dose appointment. She said that when she had Covid-19 they did a Chest x-ray on 13Nov2020 and she had low sodium. She said that they gave her tramadol at the hospital for her headache, but she had already taken 3 migraine pills that day. She had already had her flu shot and read somewhere on a website, that mRNA vaccines might cause unstable anticoagulation. She wondered if it could be possible that Covid-19 antibodies interfered with her injection? The outcome of events was unknown.