Chills; weak; couldn't get warm; fatigue; vomited; tired and lethargic; muscle pain; Low back pain; This is a spontaneous report from a contactable consumer (patient). This 71-year-old female patient received the second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: unspecified if 'EL9264' or '3L9264'), via an unspecified route of administration, on 09Feb2021 01:30PM at a single dose on the right arm for COVID-19 immunization. Medical history included thyroid disease (was diagnosed in her 40s, 30 years ago) from 1991, blood pressure high (was diagnosed in her 40s, 30 years ago) from 1991, mitral valve prolapse from 2001 (was diagnosed about 20 years ago), little heart disease (which she was told was nothing to worry about), her heart running away from her (They did extensive heart tests and pictures, all that stuff, put her on a medicine called Atenolol which makes her heart beat regularly and not have spells while she is walking of her heart running away), and double knee surgery three years ago (2018) when they put in false knees. Concomitant medications included levothyroxine sodium (SYNTHROID) for thyroid disease, atenolol (ATENOLOL) from 1991 for 'her heart running away from her' (She has been on atenolol 30 years, since she was 40 something. It is good medicine, and she doesn't have her heart running away.), tramadol (TRAMADOL) for double knee surgery three years ago (2018) when they put in false knees, and she also takes two high blood pressure medications. The patient added that all of the medications she takes she has been on about 30 years. The patient previously received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: EL3247), on 18Jan2021 01:30PM on the right arm for COVID-19 immunization. The patient reported that she had received both doses of the Pfizer COVID-19 vaccine. She has been told that the AEs (adverse events) associated with the vaccine would happen within 12 hours. However, her AEs had been occurring in stages. On 10Feb2021, she had muscle pain. On 11Feb2021, she woke up and threw up and was in bed all day having fatigue. At the date of report, 12Feb2021, she was still on her bed, tired, and having chills. She wanted to know if it is normal to have these reactions 3 days after the shot. She further reported that she got the second dose. And after feeling wonderful after the first dose, she got the second dose on 09Feb2021 and later that night her lower back was killing her. She later clarified that she had low back pain. She stated that she knows that part of side effects that she read for when someone got the shot was that they can have a headache and she was told side effects should only last 12 hours. She stated that on the 11Feb2021, she woke up that morning and couldn't make it out of bed and vomited, then had to get up and clean her bed and put on new sheets. She only vomited once. She stated she has been so tired and lethargic that she stayed in bed all day on the 11Feb2021. At the time of report, on February 12Feb2021, she was having chills, she couldn't get warm, and she didn't have a fever, but she is still weak. Since she was told side effects would go away within 12 hours and this has been three days, she asked if what she was experiencing was normal. As for corrective treatment the patient reported that she also takes tramadol since she had double knee surgery three years ago (2018) when they put in false knees; that's when she started taking Tramadol for that. She said she also took it for the back pain which it kept it at bay until it wore off. Her lower back pain is already gone at the time of report; she was just having chills still and was tired. She stated she has had so many symptoms on different days that she was just questioning. She stated that everyone else who was sick with the second dose it lasted 12 hours, and her friends who really got sick with it, hers is minor, but she would like to know if it is normal that it is still lasting. Outcome of the event low back pain was recovered on an unspecified date in Feb2021. Outcome of the events weak, couldn't get warm, chills and tired was not recovered. Outcome of the other events was unknown.    Information on batch number has been requested.