felt off; migraine; had the worst headache of her life; her arm got so sore; hard to lift; a slight bit feverish; The initial case was missing the following minimum criteria: adverse event. Upon receipt of follow-up information on 04Nov2021, this case now contains all required information to be considered valid.  This is a spontaneous report from a contactable consumer (patient). A 61-year-old female patient received second dose of bnt162b2, via an unspecified route of administration, administered in Arm Right on 08Apr2021 11:00 (Lot Number: ER8732) at the age of 61 years old, at single dose for covid-19 immunization. Patient's Medical History reported as None. The patient received her first dose of bnt162b2 (LOT number: EN6199) on 18Mar2021 10:45 at the age of 61 years old and administered in Arm Right for Covid-19 Immunisation. There were no additional Vaccines Administered on Same Date of bnt162b2. There were no other vaccinations within four weeks prior to the first administration date of BNT162B2. The patient's concomitant medications were not reported. The patient states she has received both her Pfizer Covid 19 vaccine, first dose on 18Mar2021, and second dose on 08APR2021, and due to her family and busy household, she wanted to make sure the vaccine worked for her, so she requested an antibody test from her doctor and have an antibody test done which returned as negative. The caller's doctor initially provided that it was working and nurse called back that it was not working. Caller states she had the antibody test 2 days ago on 02Nov2021, she had blood drawn on 02Nov2021 and she called the doctor's office on 03Nov2021 and got the negative antibody result on 03Nov2021. She was advised that the vaccine did not work for her and the doctor advised her to get a Booster dose of the vaccine. The nurse on the phone added that the vaccine did work, and the antibody test showed that the caller was never exposed to COVID-19, but the nurse also added that the vaccine should have produced antibodies. The caller is confused and wanted this antibody test result clarified for her. The patient had an anxiety about getting Covid 19, she just doesn't want to get sick. She had her children late in life, and she wanted to make sure her vaccines are still working, that's the only reason why she had her antibodies tested, her immune test, they are calling it an antibody test, when they tell her she is negative for antibodies that really doesn't mean anything, it just tells her she hasn't been exposed to COVID. Caller states she was supposed to get an email from agent with the information, she hasn't gotten COVID-19 yet. She knows it had to do something, she had the worst headache of her life on 09Apr2021, it triggered a migraine, it had to do something for her, the lady she spoke to this morning, when she was saying the information, she was just reading it, she is hoping that means she is protected. Caller states the first dose, she didn't feel anything. Caller states the second dose, her arm got so sore on 08Apr2021, just like when she got a Tetanus shot, it was super sore and hard to lift on 08Apr2021, and the funny thing is some people were saying to move her arm around all the time, and some people were saying it doesn't make a difference. But anyway, her arm was super sore then that night on 08Apr2021 she did feel like she was a slight bit feverish, but she didn't even take her temperature, she just felt off. The next morning, 09Apr2021, in the morning, she ate a bit, then she started getting a headache and it trigged a migraine for her and the migraine probably started by 11AM (09Apr2021) and it lasted for several days, which she doesn't normally have migraines for several days. She states honestly once she got her migraine she didn't think about that anymore, she is guessing probably the soreness is maybe went away on 10Apr2021, once her migraine started she doesn't think she thought of anything else. For event headache, the worst of it ended after two days, then it just kind of was lingering, lasted another 3 to 4 days. She should have asked, if she had such a bad migraine, even at the time, it was worse if she would get Covid, but it was horrible, she wants to get her booster when it comes out, but she is scared about the migraine, but she doesn't want Covid because her daughter got it and has long haul Covid from it, she doesn't want to get Covid at all. The outcome of the event headache was recovered in Apr2021, the outcome of event 'her arm got so sore', 'hard to lift' was recovered on 10Apr2021, the outcome of event 'slight bit feverish' was recovered on 08Apr2021, the outcome of event migraine and 'felt off' was unknown.  Follow-up attempts are completed. No further information is expected.