When she received the first dose of the vaccine she only had some pain in her arm; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 72 year-old female patient received bnt162b2 (BNT162B2), administration date 19Jan2021 (Lot number: EL1283, Expiration Date: 30Apr2021) at the age of 72 years as dose 1, single for covid-19 immunisation. The patient had no relevant medical history. The patient's concomitant medications were not reported. The following information was reported: PAIN IN EXTREMITY (non-serious), outcome "unknown", described as "When she received the first dose of the vaccine she only had some pain in her arm".  Additional information: The patient received her booster dose on Tuesday of this week. The patient stated about 12 hours later after receiving dose, she had a horrific headache. She started feeling very weak. She had tiredness and fatigue, she had no appetite, severe body aches and a slight fever. When she received the first dose of the Pfizer Covid-19 vaccine, she only had pain in her arm. Her second dose, she stated she had not so bad side effects, but did not specify what those side effects were. With the booster shot, she had a real bad experience overall. She was under the impression that the booster dose should only make patients develop some mild side effects but this was not her case. Upon transfer, the caller states she knows Pfizer doing a lot of studies and she is a real avid proponent of getting the COVID vaccines and she is very appreciative of Pfizer for making those available. she works full time Healthcare Professional. Her side effects were so horrific and she feels better today. The caller confirms she received her booster dose on Tuesday, 28Sep2021. She states she had weakness that started about 12 hours after receiving her shot. She clarifies she actually started with very bad chills, that was her first symptom. She had to get a couple of blankets although its very hot where she lives. She had a very severe headache that lasted for quite a while, but she took a Tylenol and it seemed to subside. She experienced very bad fatigue and she felt a lot of weakness. She did not work for 2 days. She still is not back at work. She could not concentrate on her computer, she just had to turn her computer off. She experiences a lack of appetite, tiredness, and a slight fever. She states she is not trying to make light of what she experienced. For her to call and report this Pfizer, it was not good, however she would get the shot again and go through it again. Caller states her symptoms have improved. The symptoms lasted 2 days. Today is Thursday and she is feeling much better. She states she was not able to drive, she couldn't leave the house. She couldn't function, she was so out of it. The caller asks if what she experienced is a normal reaction? Or was what she experience more on the extreme side? The caller makes the comment that her girlfriend got the shot and did not have one side effect, not one. She states she knows everybody is different though. She was given a sheet that has COVID-19 Pfizer 0.3 and she sees an NDC. The caller states she sees on her card Pfizer and the Lot number: FF2588, she thinks the third digit is a 2, but she is not completely sure because of the way the person wrote it. Patient received second dose on 09Feb2021 (Lot: EL9262, Expiry 31May2021), with the second dose Pfizer COVID-19 vaccine, she had COVID arm, clarified as a big red blotch. She had weakness, headache, but had no nausea. She felt tired. This was going back 6 months, but she states these symptoms were not near as severe as what she had with the booster. She mentions she did not start any new medications within the 2 weeks leading up to her systems. She did have a slight fall 2 weeks before the booster shot. She states her x-rays and everything was fine. She was on pain medications about 2 weeks before the booster shot but she stopped it, she only took it a couple of days, and was not taking the pain medications when she got the booster shot. She clarifies she stopped the pain mediation 2 weeks before the booster shot so it was way out of her system when she got the booster shot. No further details were provided. Investigations: None. She states she did not go to the doctor for her symptoms because she was reading about it and read that the symptoms normally pass. Her symptoms did, she feels 100% better. She states the symptoms lasted 2 days and they were pretty bad. Her main question, which is pretty important to her to know, was if these side effects were normal? She knows everybody is different and experiences different things, but what she experienced a normal reaction? The caller states she never got an answer from the previous agent. She would like an answer.  No follow-up attempts are possible. No further information is expected.