feeling palpitations; blood in her urine; pain in her right kidney; While she was there they took her BP and it was 190/90 and she takes BP pills then last night it was a little high but it came down by itself.; This is a spontaneous report from a contactable consumer or other non hcp. A 78-years-old female patient received first dose of bnt162b2 (BNT162B2, Solution for injection, Batch/Lot Number: EN5318), via an unspecified route of administration on 25Jan2021 as 1st dose, single for COVID-19 immunization. Medical history included anticoagulant therapy (blood thinner) from an unknown date and unknown if ongoing. Concomitant medications included acetylsalicylic acid taken for anticoagulant therapy, start and stop date were not reported. The only medicine that is relevant is the Baby Aspirin, it is 84 mg. She confirms 84 mg baby Aspirin. Her cardiologist gave it to her for a blood thinner. On Jan2021 patient experienced feeling palpitations, blood in her urine, pain in her right kidney and while she was there, they took her BP and it was 190/90 and she takes BP pills then last night it was a little high, but it came down by itself. The patient underwent lab tests and procedures which included blood pressure measurement as 190/90 on Jan2021 she was there they took her BP and it was elevated to 190/90, sars-cov-2 test as unknown results on 28Jan2021 she went to get a COVID test yesterday, urine analysis as blood on Jan2021. Caller is calling about the Pfizer COVID-19 vaccine. She received the first dose 25Jan2021, last Monday and then she began feeling palpitations. She also had blood in her urine and pain in her right kidney. Today her urine was clear but the palpitations are still there and she wanted to call and report and ask does she need to do something about it. Also she went to get a COVID test yesterday. No further information provided. While she was there they took her BP and it was 190/90 and she takes BP pills then last night it was a little high but it came down by itself. No further information provided. She has a flight, should she not fly or is there no problem. She also is set to get the second dose 15Feb2021 and she wants to know what will happen should she not take her baby Aspirin. She takes a Baby Aspiring every 2 days, she took one last night but she does not know if maybe the baby Aspirin is the reason she got the blood in her urine. She wants to know if she should suspend the vaccine or get it. She sees the date she is to get the second vaccine 15Feb2021. She does not see any expiration date. Trying to prevent COVID she is at risk with other issues, she gets pneumonia easy. She has had the vaccine for pneumonia and flu because she is elderly (78) and that is an At risk age. She confirms she wants to know if she should still get the second dose after this experience and also if she does take the second dose should she stop the Baby Aspirin a few days before. The outcome of the events was not recovered for palpitations and recovered for blood in urine, whereas unknown for the other events.  Follow-up (29Jan2021): This is a follow-up spontaneous report from a contactable consumer. No new significant information was found.  Follow-up attempts are completed. No further information is expected.