Fever; belly is swollen; hurting; hard for him to breath/moves and exerts, his breathing is labored; extremely tired; muscle pain, aches; extreme chills/shivering; shaking; Joint pain; This is a spontaneous report from a contactable consumer. A 76-years-old male patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE, solution for injection, lot number: EL3248, expiry date not reported), via an unspecified route of administration on 02Feb2021 11:00 at a single dose in the left arm for COVID-19 immunization. Medical history included ongoing atrial fibrillation (reported he has had no occurrence for 3-4 years); and high blood pressure and high cholesterol, both from an unknown date and unknown if ongoing; and pneumonia. Concomitant medications included that patient was also taking high blood pressure medication and high cholesterol medication. When asking for the Lot number, reporter explained "his card was in his wallet but she gave her lot and said it was the same, they got the shot at the same time, within 5 minutes of each other". Patient previously took amoxicillin for pneumonia from 09Jan2021 to 13Jan2021, reported as he took this for 5 days and stopped.  This was reported as "It was noted that he had pneumonia and got an antibiotic that he took for 5 days. It was amoxicillin and was started on 09Jan2021" (pending clarification). Reporter also stated that she was not sure if it was a Pfizer vaccine but patient did have a mild reaction to the first shingles vaccine (unspecified) but this lasted only 24 hours. Reporter, a wife calling for her husband (patient), was reporting on the COVID vaccine and who explained he was having symptoms and wanted to report this but also has a question on what to do. Patient was extremely tired. This was noticed on the 3rd day after the shot. This would be Friday 05Feb2021 and it was the same since starting. There were moments when he has rested and showered where he felt better but then it went down again. The patient had muscle pain, aches on 05Feb2021, this would be Friday, and it came and went but was about the same. Patient had extreme chills on 05Feb2021, and he was still shaking now (05Feb2021). It was a little better during the day, maybe because he was moving around but last night he was shivering and shaking for 3 hours and she could not get him warm even with the heating pad. Patient also had joint pain on 05Feb2021 and it was the same since starting. Patient had fever that probably started Sunday, 07Feb2021 wherein few hours ago, it was 102.00 but she got it down to about 100.2 now, it has increased and was the reason she called today. Patient's belly was swollen since 05Feb2021 and it was the same since starting. She remarked she was not sure if this was where lymph nodes were or not and the cause of the swelling. It was also explained that due to hurting, it was hard for him to breath. When he moved and exerted, his breathing was labored. This would be Friday, 05Feb2021 and it is the same since starting. Yesterday, patient went to his primary doctor. He was supposed to do blood work but couldn't due to his fever. The doctor prescribed him an anti-inflammatory called Etodolac 500mg. It was by Taro Pharmacutal US (there was no Lot or expiry). He took one at 7pm and was to take them twice a day, took another a little while ago. Reporter explained she has heard stories where the second dose is worse, and wanted to know if that is true. She also wanted to know if the product Etodolac, has side effects that are similar to what patient was experiencing, and wouldn't taking that make the side effects double worse. Therapeutic measures were taken as a result of the events extreme chills/shivering, shaking, joint pain, and fever.  The events extremely tired, muscle pain, aches, extreme chills, shaking, joint pain, fever, belly was swollen, hurting, and "hard for him to breath/moved and exerted, his breathing was labored" were not recovered