I slept until morning and woke up at 8:30am with a 101 degree fever and chest pain of 5/10.; I slept until morning and woke up at 8:30am with a 101 degree fever and chest pain of 5/10. Pain was centered near my sternum and felt as though someone had punched me in my chest. Once I took some tylenol and moved around it somewhat better.; On the 22 I had normal side effects such as sore arm and fatigue during the day. Around 8pm my side effects began to increase and I went to bed.; On the 22 I had normal side effects such as sore arm and fatigue during the day. Around 8pm my side effects began to increase and I went to bed.; This is a spontaneous report from a contactable healthcare professional, the patient. A 27-year-old male patient received the second dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: EWQ177) via an unspecified route of administration in the left arm on 21May2021 at 15:00 (at the age of 27-years-old) as a single dose for COVID-19 immunisation. Medical history included bipolar disorder and migraine. Concomitant medications taken within two weeks of vaccination included quetiapine fumarate (SEROQUEL) and valproate semisodium (DEPAKOTE), both from unknown date for unknown indication. The patient previously took Prochlorperazine (reported as compazine) and Triptan both for unknown indication and experienced drug allergy. The patient previously took the first dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: EWQ158) via an unspecified route of administration in the left arm on 28Apr2021 at 13:00 (at the age of 27-years-old) as a single dose for COVID-19 immunisation. Prior to the vaccination, the patient was not diagnosed with COVID-19. Since the vaccination, the patient had been tested for COVID-19. The patient did not receive any other vaccines within four weeks prior to the vaccination. The patient received second vaccine on 21May2021. Felt normal that day. On the 22May2021, the patient had normal side effects such as sore arm and fatigue during the day. Around 20:00 his side effects began to increase and the patient went to bed. The patient slept until morning and woke up on 23May2021 at 08:30 with a 101degree (unspecified units) fever and chest pain of 5/10. Pain was centered near the sternum and felt as though someone had punched him in the chest. Once he took some tylenol and moved around it was somewhat better. At 23:00 on the 23May2021, the patient felt better but still some mild chest pain. The patient had notified his physician. The patient missed work on the day of report due to chest pain. The events resulted in doctor or other healthcare professional office/clinic visit. Therapeutic measures were taken as a result of chest pain and included treatment with tylenol. On an unknown date post vaccination, the patient underwent COVID-19 test via nasal swab and the result was negative. The clinical outcome of the events had normal side effects such as sore arm and fatigue during the day, around 20:00 side effects began to increase and went to bed, slept until morning and woke up at 08:30 with a 101degree (unspecified units) fever and chest pain of 5/10 was resolving at the time of report.  No follow-up attempts are needed. No further information is expected.