Caller stated that she drank water the next morning because she still did not feel the need to urinate/She had no need to go urinate/ did not feel urge to go to the bathroom; Caller stated that she slept through the night about 7-8 hours, which is rare for her; This is a spontaneous report from a contactable consumer (patient reported herself). A 87-year-old female patient received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: Solution for injection, Lot number: EL8982, Expiry Date: Not Provided) via an unspecified route of administration on 04Feb2021 17:30 (0951 ET) at single dose to her left arm for Covid-19 immunization. The patient's medical history and concomitant medications were not reported. Historical vaccine details included: she had her first dose on 14Jan2021, Lot: EL1283, left arm. Caller reported side effects after receiving the first dose of the Covid vaccine and would like to know if there have been any reports like hers. Caller received the first dose on Thursday, 04Feb2021 at Hospital around 5:30 p.m. Caller stated that her significant other (87, male) and herself received the vaccine together, in which she reported on behalf of significant other, that he experienced injection site discomfort during administration of the vaccine. Caller stated that she slept through the night about 7-8 hours, which is rare for her, and did not have any feeling to urinate. Caller stated that she drank water the next morning because she still did not feel the need to urinate, in which she finally did later on. Friday night, caller reported sleeping through the night again with no inclination to go to the restroom. "Nothing happened for many hours." Caller reported that things were more normal, but not 100 percent normal on Sunday. Caller reported "today is the first morning she actually had the need to go and the amount of fluid that came out was normal." Caller reported that this has never happened to her before and nothing else happened the day of vaccination. Caller received an annual blood test yesterday, in which they took 5 vials of blood, and performed a urinalysis. Caller stated that they would not have those results back until Wednesday. Caller stated that she looked up a report and was able to find one case of someone else experiencing a bladder problem after the vaccination. Caller asked why she would react like she did to the vaccine. Caller asked if she could have a worse reaction with the second dose. It was reported that, she had no need to go urinate. She was 87 years old and had the second vaccine on Thursday, the 04Feb2021. She came home and felt fine and had dinner. She went to bed at the appropriate time. She slept through the night and that was unusual because normally she had to get up to go to the bathroom. She had no need to go urinate. She woke up at 8 AM. She drank water because she did not have to urinate. It did not happen for quite some time. The same thing happened on the fifth. She slept without needing to urinate. Saturday morning she had no need to go urinate. Now it was Monday and Sunday was normal. Caller confirmed product as COVID19 Vaccine. It was reported that on 05Feb2021, she did not feel urge to go to the bathroom. Caller stated she wanted to report that she had some strange issues concerning her bladder. Stated she had the vaccine injected on Thursday last week 04Feb2021, stated she felt fine in the evening and through the night, stated she got injection at 5:30 PM, had dinner with her family and was fine, that she was 87 years old and normally she gets up once or twice to go to the bathroom to urinate, stated that first night she slept for almost 8 hours, got up and had no feeling to go to the bathroom and kept drinking water and eventually went and had no pain with urinating, states on Friday night again she slept all night and did not have to get up to go to the bathroom and did not have to go in the morning. Caller stated she kept drinking water. Stated Sunday was the first day she felt normal. Stated even when she started to have normal bladder behavior, she was not releasing normal amount of fluid initially, stated today it was really back to normal. Stated it was just trickles at first, but felt she had a lot of fluid to come out. Caller states she saw her doctor yesterday, not about this but just for her annual visit, stated she had a normal yearly blood test done and also had a urinalysis done but well not have results until Wednesday. Declined contact of HCP. Caller stated her question was had anyone else reported this, stated the read about it everywhere on the sheet and on (withheld) and could only find one other report of bladder issues. States she felt no pain at all or anything with either injection. Got the vaccine at (Withheld) in (Withheld). States she did not feel the needles even going in, no pain, felt fine. Stated her husband complained that his arm was hurting, states not anymore. Stated his injection was done by a different nurse. Stated the same thing happened on the first shot, and he had a different RN then as well. Stated they had to stay 15 minutes to make sure they felt okay, were not allowed to leave until 15 minutes were over. Outcome of the event sleep disorder was unknown whereas other event was recovered on 07Feb2021. No PQC present.