She had a flush and felt like a rush. Maybe it was nerves; had headache in back of my head; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 64 year-old female patient received bnt162b2 (BNT162B2), intramuscular, administered in arm left, administration date 03Mar2021 13:45 (Lot number: EN6203, Expiration Date: Jun2021) at the age of 63 years as dose 1, single for covid-19 immunisation. The patient had no relevant medical history. Concomitant medication(s) included: SYNTHROID taken for thyroid disorder (ongoing); VITAMIN D3 taken for bone disorder (ongoing). The following information was reported: FLUSHING (non-serious) with onset 2021, outcome "unknown", described as "She had a flush and felt like a rush. Maybe it was nerves"; HEADACHE (non-serious) with onset 2021, outcome "unknown", described as "had headache in back of my head".  Additional information:  Her sister called a while back in Sep or maybe sooner than that. Her sister called and talked to (withheld). Caller was scared to get booster shot. She got an email from the safety department about side effects. When caller had second shot on 24Mar2021 she started to experience heart palpitations that are different from what she has ever experienced. The doctors don't even know. She called her heart doctor that she goes to in Jul because she got it in Mar and experienced heart palpitations like she had never had. With the first shot she had a flush and felt like a rush. Maybe it was nerves. She got the same rush for the second shot and in the neck or wherever. At that time, she couldn't sit in the chair to wait in the pharmacy. She didn't want to pass out there. COVID shot: First shot: given on 03Mar2021, expiry: Jun2021, lot number: EN6203, manufacturer: Pfizer. She had it in Mar and then in Jul it was so weird. It was in her neck and the heart palpitations were not the same as what she was used to. Caller clarified that occasionally years ago she would have a flutter or miss beat and then was done. This was constant. Caller confirmed there was no new event and she is looking for information about booster shot and heart palpitations. Dose: 2nd ; Date: 24Mar2021; Time (24hr): 03:45 PM; Anatomical site of the injection: left arm; Route of Administration: Intramuscular; Batch/lot number: Pfizer Exp-Jun2021 EN6204. Vaccination Facility Type: Pharmacy or Drug Store. Vaccine Administered at Facility: No. Prior Vaccinations (within 4 weeks): If applicable, list any other vaccinations within four weeks prior to the first administration date of the suspect vaccine(s): None. Patient's Medical History (including any illness at time of vaccination): None. Family medical history relevant to AE(s): N/A. Relevant Tests: (List other relevant diagnostic and confirmatory test results for event(s), for example, from blood tests, cerebro-spinal fluid culture, pleural fluid culture, urine culture, diagnostic imaging, (e.g., chest X-ray, MRI). If COVID-19 testing has been conducted, provide test dates and results): None. Specific Relevant Test: (For Thromboembolic Events with Thrombocytopenia): None. 1st shot administered to patients's left arm-immediately felt a flush up my neck to my head. Had headache in back of my head.   No follow-up attempts are possible. No further information was expected.