side effects just took her energy completely out of her; It was like she was aching in her bones; being tired; all of sudden got chills; ended up running a fever over 101 degrees Fahrenheit; she slept the whole day, for like 12 to 14 hours and that was after sleeping the night before; didn't really feel like eating; had a slight ache in her arm not long after she got the COVID vaccine; This is a spontaneous report from a contactable consumer (patient) via Pfizer-sponsored program. A 74-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE; Lot Number: EN5318 and expiration date was not reported), via an unspecified route of administration, administered in Left Arm on 16Mar2021 11:00 (at the age of 74-years-old) at dose 2, single for covid-19 immunization. The patient had no medical history. There were no concomitant medications. It was reported that she was experiencing bad side effects from the second dose of the Pfizer COVID vaccine. She had both doses and she only had side effects with the second dose. She got the second dose of her COVID vaccine around 11:00 on 16Mar2021 and she had a slight ache in her arm not long after she got the COVID vaccine. She had that same experience when she had the first COVID vaccine as well. Nothing bothered her after that until the next day, about 22 hours later she thought, she all of sudden got chills, ended up running a fever over 101 degrees Fahrenheit and she slept the whole day, for like 12 to 14 hours and that was after sleeping the night before. That night she thought that she had to eat something, so she tried to eat and then she went back to bed again. She didn't eat anything really; she didn't really feel like eating and she just was chilled to the bone. It was like she has aching in her bones. That first night, 17Mar2021 when she thought that she could be having a reaction, she took 650 mg of Tylenol and before that, during the daytime, she took a regular 500 mg Tylenol when she thought that she was having this reaction. She thought that she had heard about some people not having reactions and then some people might have slight reactions. She also heard that younger people usually have worse reactions than older people. So, she must be with the younger population she jokingly said. Probed from caller for further information on younger people that have had worse reactions and she said that was a general statement that she had seen on the internet. She had tried to find something online to see if anyone else was having this kind of reaction, such as a high fever. She hasn't been sick all winter long and she thinks that it is because everyone has been wearing masks and they were a lot safer than they normally were. Caller confirmed that the fever, her being tired, and her having chills all began on 17Mar2021. She said the side effects began close to 24 hours after her COVID vaccine and then 48 hours after her COVID vaccine she was fine. She felt a lot better yesterday, 18Mar2021. She has 2 dogs, and she has to get up and walk them and all of that and she felt a lot better but then she realized that she was still tired. She said that all of her symptoms were gone yesterday, 18Mar2021 and she thinks that the tiredness was gone then to, but it was hard to say. She thinks that what happened was that she was so tired, and the side effects just took her energy completely out of her, so yesterday, 18Mar2021 it was like she was just catching up. Plus, yesterday (18Mar2021), was a weird day with the weather anyways. She confirmed that her arm was sore beginning on 16Mar2021, and she said that she was still feeling it, it was still achy if she touches it. It has improved since then. The thing that scared her was that this thing, COVID, is never going to go away, it would dissipate but it was not going away, so she wanted to know how it was going to be if it was boosters. She wanted to know if the boosters also going to cause reactions like this, too. Her first COVID vaccine was on 23Feb2021 with lot number EL9266 (at the age of 74-years-old) via unspecified route of administration in right arm for covid-19 immunization and had slight ache in her arm, caller did not have NDC and expiry date since they were not on the COVID vaccine card either. She wanted to be protected but she was more concerned about being protected for her husband since he was a kidney transplant recipient, and they don't want to mess with the transplant. They can't afford to get sick. And even though she doesn't feel like it, they were senior citizens. She said her immune system must be working better than it should, even though that was the better option than it was declining. She said this because of her statement earlier in regard to the younger population having worse reactions after the COVID vaccine that the older population. She said that if the information she was giving in this report would help others then she would complete the report. She actually volunteered to test the COVID vaccine before it ever rolled out to the public and everyone said that she was crazy for wanting to do that because of her age so she had decided not to do it. She was going to go up there and get them and then everyone talked her out of it. The Adverse events did not require a visit to Emergency Room or Physician Office but if she had a high fever the next day, she was thinking about getting in touch with someone at that point if that were to occur, but it didn't. Patient didn't receive any other vaccines within 4 weeks prior to the COVID vaccine.  she was basically very healthy. Relevant Tests were none. Forever, they used to tell her to not have the flu vaccine because of the eggs that were in it because she had allergies when she was little. The doctor finally said it was better to take the vaccine than deal with the consequences for the flu. She has been taking it for the past 20 years. But that's a normal vaccine and this one, the COVID Vaccine, was an MRNA vaccine. She confirmed that she had no reactions to any of the flu vaccines and the last one that she got was back in early Sep2020. She has looked online, and she has tried to put in for a search ''whether the reactions like high fevers were there for the COVID 19 vaccine or Pfizer COVID vaccine''. She was sort of surprised and thought that since the COVID vaccine was so new that she would want to have as much information out there to be sure that everyone was so well protected and that there was no fear of having the COVID vaccine. Her nephew and his wife, he is an EMT, and his wife works in the hospital, they haven't taken the vaccine yet. She doesn't know whether it is from all of the misinformation out there and then she got nervous and said, this was dumb, but then she thinks what she needs to do. The more information that is out there about people and their side effects will better inform the public to say that it was okay to get the COVID vaccine and that the side effects may only last for half a day. Many have had the flu or a bad cold, so they can handle that. It seems to be an appropriate positive that the pharmaceutical companies should put out there for the COVID vaccine. The transfer agent she spoke with previously said that fortunately, or unfortunately, all of this is government controlled so people don't know what all can or can't happen. She says when someone gets the flu vaccine, they get information that says if they have a reaction to contact this certain number but all she got was this COVID vaccine record card and was told to laminate it and carry it with her at all times. It would be nice to give out a flyer along with the COVID vaccine record card that says if a reaction occurred then could go to this webpage to tell about the reactions they had or call at this number. But when she got her COVID vaccine it was just like "see ya" after she had waited for 15 minutes for the vaccine. She says that she doesn't want to spend too much more time on the phone today at the time of report. But stated to look at what was going on with AstraZeneca. They were danged if they do and danged if they don't. Further stated that they live in such a society of falsehoods and have for so long, it was like a breath of fresh air to get some truth out there. The outcome of the event slight ache in her arm and tired was recovering, outcome of the events (aching in her bones, side effects just took her energy completely out of her) was unknown and rest of the events were recovered.  No follow-up attempts are possible. No further information is expected.