so nauseated; hot flashes and chills; hot flashes and chills; Caller reports one minute feels hot, next minute feels cold; started having abdominal pains in stomach; has absolutely no energy and no strength; Arm was sore; so fatigued and so tired/extremely exhausted; This is a spontaneous report from a contactable consumer (patient). A 45 years old male patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Lot Number: EW0150) in left shoulder (arm) on 08Apr2021 14:45 at age of 45 years old at single dose for COVID-19 immunization. No medical history (including any illness at time of vaccination) reported. There were no prior vaccinations within 4 weeks. There was no adverse event (AEs) following prior vaccinations, this is the first he can ever recall. There was no family Medical History patient can think of. Patient knew his Dad got the Covid-19 second dose about the same time patient got his first shot Pfizer Covid-19 vaccine and his Dad was not doing so well. There were no additional vaccines administered on same date of the Pfizer suspect. Concomitant medications were not reported. Patient was a consumer reporting he received the first dose Pfizer BioNTech Covid-19 vaccine last Thursday in his left shoulder was calling about his side effects. Patient stated his arm was sore for a couple of days. Patient confirmed it was his left arm that was sore. Reports this arm soreness was still ongoing. Stated his arm is still sore if patient touches his arm. The pain in the arm has faded but it is still there, if patient bumps his arm, he noticed. By starting Saturday, patient was so fatigued and so tired, reported he could not stay awake. Then yesterday the patient was so tired and went for a walk for a few hours. Patient was still extremely exhausted. Reports tiredness is ongoing today. Patient still felt exhausted and did not get out of bed until 14:00, just seems ongoing. Last night (11Apr2021) after patient went to bed, started having abdominal pains in stomach, not able to sleep all night because of the pain. Reported the abdominal pain in stomach was touch and go. By morning (12Apr2021), patient was so nauseated, had to call out of work, patient did not get out of bed until 45 minutes ago. Had absolutely no energy and no strength, ongoing. Patient reported the only other side effect had today (12Apr2021) was hot flashes and chills, took hot bath to get rid of chills. Began about 0900 or 1000 this morning. After patient started getting really nauseated this morning, tried throwing up to empty out stomach and nothing there.  A little while later patient noticed hot flashes real bad, later on had to take hot bath to get rid of chills. It was still going on but it was minor, not as strong as what it was, seems to be improved but still having hot flashes and chills. Patient reported one minute feels hot, next minute feels cold. Patient wondering if they should try to go to work tomorrow or if patient should let his body rest more. He was not sure what to do. The adverse events were not required a visit to Emergency room or Physician office, but a friend of the patient's says he should go. Outcome of event arm was sore and hot flashes and chills, one minute feels hot, next minute feels cold was recovering, for event so fatigued and so tired/extremely exhausted, no energy and no strength was not recovered, for abdominal pains in stomach was recovered, for so nauseated was unknown.    No follow-up attempts are needed. No further information is expected.