fever; Aches and pains all over body; Right arm soreness at injection site; Severe chills; too tired and too chilled; This is a spontaneous report from a contactable consumer (patient) via Medical information team. A  male patient received second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number: EW0158, Expiration date: 31Jul2021), via an unspecified route of administration in right arm on 13Apr2021 at 10:45 at single dose for COVID-19 immunization. The patient previously took first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number: ER2613, Expiration date: 31Jul2021), via intramuscular route of administration in left arm on 23Mar2021 at 11:45 am as single dose for COVID-19 immunization. The patient's medical history included  diagnosed on Jul2016, colonoscopy on 07Apr2021. Patient had no family history. The patient concomitant medications included supplements. The patient did not receive any other vaccine within 4 weeks prior to the vaccine. Patient had no additional vaccines administered on same date of the suspect vaccine. The patient stated he had no reaction to the first dose of the vaccine and after the second dose on tuesday (13Apr2021 at 21:00) and had chills when he went to bed that night.  He went to bed that night with severe chills. On 14Apr2021 at 09:00, the next morning, he had a fever of 101 and aches and pains all over his body. Earlier, about a half hour before shot, he had a COVID test because he had a procedure today to give birth to a kidney stone  which was cancelled due to fever aches and pains.  He previously had COVID test and they all came ack negative.  The procedure had to be cancelled. Today, he went back in to get another COVID test. He will know results within a couple of hours or before tomorrow whether it comes back positive or not. He does not believe the vaccine gave him COVID, but will find out when the test is tomorrow. He asked if the second dose is the same as the first dose. He said he has been reading and it is essentially the same but depends on the person that dilutes it and the temperature it is at. After verbal response he stated the second shot was definitely building a strong immune response. It was reported that first shot primes the immune system, helping it recognize the virus, and the second shot strengthens the immune response. Chills were gone by wednesday gone but still had a fever and aches and pains. He was too tired and too chilled to take his temperature tuesday night. He has a hazardous material thermometer. He called his urologist that night and said he may need to reschedule procedure tomorrow which is today. The fever improved during day but at night it crept back up to 101 and this morning is 98. His pulse ox is 98%. This morning other than feeling stiff for sleeping 16 hours, he has a couple of aches and pains this morning, but they are gone now. He was diagnosed with this kidney stone for 4 years. It is a bladder stone and his urologist said it is a nuisance stone. Once he got where insurance would cover it, he said lets take care of it. It was diagnosed Jul2016 and it was prescheduled to get it removed. Patient had a colonoscopy that was prescheduled. It was 15 years since he had one. He kind of wondered if the doses are different. He wanted to know if the second dose was a little more powerful. He takes supplements but does not think any would be relevant. Taking same supplement with first dose. The patient underwent lab tests and procedures which included SARS-CoV-2 test: negative on 23Sep2020, 05Apr2021 before Colonoscopy and last test was 13Apr2021 two days prior to when he was going to have kidney stone removed. He had an additional one done today and does not have results yet. The outcome of the event fever was recovering, too tired was unknown and rest all events was recovered on 2021.   No follow-up attempts are needed. No further information is expected.