Feel fogginess/I felt a foggy head/foggy pressure in my head; Headache that comes and goes; Foggy pressure in my head; Had three different fevers, the first fever on 08Apr2021, the second fever on 21Apr2021 and the third on 27Apr2021; Stomach cramp; This is a spontaneous report from a contactable consumer (patient). A 57-years-old male patient received second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot Number: EW0151) via an unspecified route of administration on 07Apr2021 as dose 2, single (age at vaccination 57-years-old) for COVID-19 immunization. The patient medical history and concomitant medications were not reported. The patient previously received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot Number: ER8727) via an unspecified route of administration on 05Mar2021 as dose 1, single (age at vaccination 57-years-old) for COVID-19 immunization and experienced sore arm. The patient experienced feel fogginess/I felt a foggy head/foggy pressure in my head, headache that comes and goes on 15Apr2021, stomach cramp on 08Apr2021, had three different fevers, the first fever on 08apr2021, Had three different fevers, the first fever on 08Apr2021, the second fever on 21Apr2021 and the third on 27Apr2021. Consumer stated, I want to report it to find out what this could be because I never had a problem, I am trying to make an appointment with my doctor. Its been long enough I was given time to clear up my head, but mind has been more in a fog. consumer stated that, no other medication just an occasional ibuprofen for back issue every now and I take ibuprofen for once a month or something and No I had complete physical probably last December back turned out no problem. I never had any problem. He reports he had the first Covid 19 vaccine on 05Mar2021 and had no side effects at all. He received his second Covid 19 vaccine on 07Apr2021. The night after he received the second dose on 08Apr2021 he had a fever and some stomach cramps. He reports these side effects were probably normal side effects. He reports he also experienced being foggy-headed and some pressure in the top of his head. He reports he never been sick, he had very little sickness in his life. He is very healthy. Since getting the second Covid 19 vaccine he had three different fevers, the first fever on 08Apr2021, the second fever on 21Apr2021 and the third on 27Apr2021. The fevers along with stomach cramps and pressure in his head. He wanted to call Pfizer before calling his primary care doctor. He looked and searched for his symptoms, and he is not finding any information on his symptoms. His main concern is the foggy feeling in his head and the pressure in his head. He reports some other things have been happening to him also, like dropping a drinking glass for no reason. All this started after the second dose. A pressure in his head. He has this tightness over his temples. Its a very distinct feeling but its hard to describe. Other than the tightness and foggy feeling. He reports he feels the fogginess in his head less in the morning, maybe because he has been laying down. But as the day goes on the fogginess progresses. And the feeling progresses each day. The caller does not remember which arm he received his first or his second dose. His main concern is the tightness in the head and the fogginess. The fogginess is more of his thought process is not as clear. Its an unusual feeling in his head. A tight, tight feeling. Like blood flow or pressure something funky in the top of his head. He's asking if this has been reported. The patient underwent lab tests and procedures which included pyrexia: 99.8 on 21Apr2021 it was low grade fever its 99.8 on one of the readings and about 100. The outcome of the events was unknown.  No follow-up attempts are needed. No further information is expected.