my arm is a little bit sore; shivering; I was so cold; I ached all over; I am getting the flu; I could not walk, it was like I was drunk; pulse rate was like 116; O2 stat was like 98 percent; headache; diarrhea; short of breath when I walk up to the stairs; blood pressure, it was 66 over 48/my pressure came up to 80 over 62 or something/pressure came up to like about 103/my pressure was like 120, the systolic was 120 and diastolic was like 70 something/my pressure was in the 90's; This is a spontaneous report from a contactable Nurse (Patient). A 79-year-old female patient received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Batch/Lot Number: EM9809), via an unspecified route of administration on 12Feb2021 as SINGLE DOSE for covid-19 immunisation. Medical history included High cholesterol. Concomitant medication(s) included rosuvastatin (40, not clarified further); aspirin [acetylsalicylic acid] (ASPIRIN) (81, not clarified further); zinc (50, not clarified further); alendronate sodium (Generic Fosamax) and Multivitamin. Historical Vaccine included First dose of BNT162B2 on 22Jan2021 for COVID-19 immunisation and experienced sore arm (The sore arm went away, it descended in about 12 hours and gracely went away), got really tired and itching (It started itching, okay no problem). The patient experienced my arm is a little bit sore on an unspecified date, shivering on an unspecified date, I was so cold on an unspecified date, I ached all over on an unspecified date, I am getting the flu on an unspecified date, I could not walk, it was like I was drunk on an unspecified date, pulse rate was like 116 on an unspecified date, O2 stat was like 98 percent on an unspecified date, headache on an unspecified date, diarrhea on an unspecified date, short of breath when I walk up to the stairs on an unspecified date, blood pressure, it was 66 over 48/my pressure came up to 80 over 62 or something/pressure came up to like about 103/my pressure was like 120, the systolic was 120 and diastolic was like 70 something/my pressure was in the 90's on an unspecified date; all (non-serious). Reporter (Nurse) stated "I had my first Pfizer vaccine on Friday, I think 22Jan2021 and the only thing I have was the sore arm and got really tired okay and the sore arm went away, it descended in about 12 hours and gracely went away, after that it started itching, okay no problem.  I had my second vaccine this past Friday at about 8 O'clock between 8:15 in the morning. As the day went on I felt my arm is a little bit sore, no problem. Okay I went to bed and about 3 O'clock in the morning, I woke up and I was shivering, I was so cold and I ached all over and I said okay I am getting the flu, went back to sleep, by the time I got up in the morning about 6 o'clock the aching was gone but I could not walk, it was like I was drunk. I have a little dog and she was barking to go out and it was like 0 here so I sat there for a minute and I left her out and she started barking, to bring her back and I could not walk, I kept walking into the walls and my house was just this dark, I thought it's so dark in my house so I got my little dog back in, sat down and again and I thought what, maybe I will take my blood pressure, so I did and it was 66 over 48 so I though okay, so I started drinking, I thought I got to eat, I got to drink, so I get that, my pressure came up to 80 over 62 or something, my pulse rate was like 116, my O2 stat was like 98 percent so that was not a problem. So, I ate and drink, as the day went on the pressure came up to like about 103, gradually last night by the time I went to bed, the only thing I had was a little bit of headache, I did not thought enough to take anything for, when I went to bed, my pressure was like 120, the systolic was 120 and diastolic was like 70 something, this morning when I got up my pressure was in the 90's. I was not taking any blood pressure medication, I mean I have but doctor took me off long time ago, I did not I mean I have no aches, I have no pains, I have nothing just a little bit of headache, not even enough to bother me, every now and then I think about it, I also, I mean I thought I have got to the bathroom, I had diarrhea terribly, something, I did not know if any of this is from the vaccine. I have not called my primary, I thought I called him tomorrow I mean I am fine, I am little short of breath when I walk up to the stairs but that is nothing unusual." Causality: Reporter stated "I don't know, I am thinking it does I never had anything like this before but you know I don't know, I don' know, I am just reporting it, I am 79 so I don't know how much this is, I don't know." When probed from where reporter got the vaccine, Reporter stated "I got it the first one at (Institute name)." LOT# of COVID-19 Vaccine administered on 22Jan2021: Reporter stated "You know it's not on my little card, just the LOT# of second one is on here. The first vaccine was 22Jan2021, the second one was 12Feb2021." Reporter provided the LOT# as EM9809 for second shot of COVID-19 Vaccine administered on 12Feb2021 and did not have LOT# of the first vaccine administered on 22Jan2021. Date of side effects: Reporter stated "I think when I started having difficulty was the morning of 13Feb2021." (Not clarified further).  Still experiencing side effects: Reporter stated, "No, finally last, I felt yesterday I felt like I kind of had the flu, I have got to get the flu, but it was not enough to stop me, I kept going, I went to work, I did all my stuff, this morning I got up I felt fine." (Not clarified further). Treatment: Reporter stated: No, did not take anything, no. Other medications: Reporter stated "the generic 10 mg." (Not clarified further). Reporter stated "No I was just going to report this, like I said I don't know if this is a problem or not. I have never had anything like this before, I thought this is something you needed to know." Reason of delay: Daily spike of incoming calls due to COVID-19 Vaccine. The outcome of all events was unknown except for event I ached all over, outcome was recovered on an unspecified date.