Her stomach has been hurting; Chills; she has had an intermittent fever that has gone as high as 105 degrees Fahrenheit; Body aches; This is a spontaneous report from a contactable consumer or other non-healthcare professional (patient) via medical information team. A 38-years-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, lot number was either EN7177 or EW7177), via an unspecified route of administration, administered in left arm on 13May2021 at 10:00 (age at the time of vaccination was 38 years) as dose 2, single for covid-19 immunisation. The patient medical history and concomitant medications was none. Patient took historical vaccine bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, lot number EW0171, expiration Jul2021), via an unspecified route of administration, administered in left arm on 22Apr2021 at 13:00 (age at the time of vaccination was 38 years) as dose 1, single for covid-19 immunisation. On 13May2021, the patient experienced she has had an intermittent fever that has gone as high as 105 degrees fahrenheit, body aches. On 14May2021, the patient experienced chills. On 18May2021, her stomach has been hurting. It was reported that the patient received the second dose of the Pfizer Covid-19 vaccine on Thursday, 13May2021 and that for past 5 days she has had an intermittent fever that has gone as high as 105 degrees Fahrenheit. She said she was unable to take Tylenol right now because her stomach has been hurting. It was reported that whenever she stops taking Tylenol, her fever increases between 101 to 105 degrees Fahrenheit. She was asking if this was a normal side effect and how long will it last. She also asked if she needs to go to the emergency room. She was asking if it was normal to have a fever going up that high after the covid vaccine. Her fever had been going up to 105 degrees. She received her second dose of the covid vaccine on 13May2021. The fever began that same night, but it was a minor fever. The fever went up to 105 degrees for the first three days. She had been taking Tylenol, and her fever went down. She was also having body aches and chills. Her fever was 104 degrees, but she was not exactly sure. She thinks that her fever was getting better, because it was lower than before. But if she did not take Tylenol, her fever would not go down. She was still taking Tylenol. Her stomach hurt this morning, so she did not take any Tylenol. Now her fever was back up. Reportedly, she has had chills five times. Once she has chills, her fever would spike up to 104.9 degrees. Chills happened before a fever every time. Reporter seriousness for the events was unspecified. Patient was thinking about going to the emergency room. The outcome of the events Body ache was recovered on 14May2021 and chills was recovered on 16May2021. The outcome of the event her stomach has been hurting was unknown. The outcome of the event she has had an intermittent fever that has gone as high as 105 degrees Fahrenheit was recovering.   This follow-up is being submitted to notify that the lot/batch number is not available despite the follow-up attempts made. Follow-up attempts completed. No further information is expected.