left arm swelling (injection arm) and pain; left arm swelling (injection arm) and pain; migraines; fatigue; This is a spontaneous report from a contactable consumer (patient herself) via Medical Information Team. A 58-year-old female patient received BNT162b2 (PFIZER BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number- EP7534) via an unspecified route of administration in left arm on 26Mar2021 as 1st dose, single dose and received BNT162b2 (PFIZER BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number- EL3247) via an unspecified route of administration in left arm on 16Apr2021 as 2nd dose, single dose for COVID-19 immunization. Patient was 58-years-old at the time of vaccination. Vaccination Facility Type was reported as pharmacy. Vaccine was not administered at Military Facility. Patient did not receive any prior vaccinations within 4 weeks. Patient medical history included ongoing autoimmune disorder (diagnosed 35 years ago). The concomitant medications were not reported. Patient stated she had her first Pfizer Covid vaccine dose on 26Mar2021. She reported having left arm swelling (injection arm) and pain, along with migraines and fatigue on 26Mar2021.  She stated those symptoms resolved after a week. She then had her second Pfizer Covid vaccine dose on 16Apr2021. She experienced fatigue and migraines after the second dose, along with pain in her left (injection) arm and restricted movement in this arm. The pain in her arm has continued for about 6 weeks. She called to report this and ask what she can do about it. Patient was concerned that because of her reported side effect (pain in arm for 6 weeks) the vaccine might not have worked correctly. She wants to know if she should get revaccinated if she has had a side effect like this, would this side effect caused her to not make antibodies. Patient has had extensive pain in her arm for 6 weeks after the 2nd dose of the vaccine, states she had the 1st dose on 26Mar2021 and had she expected side effect of left arm swelling and hurting and had migraines and some fatigue and this all went away after a week. Patient stated after the 2nd dose of the vaccine which she had on 16Apr2021, she again had the migraine, was very fatigued and her left arm which was the arm the vaccine was injected into was again hurting as expected but the pain continued and has been going on for 6 weeks and she has some restricted movement. Patient verified the information provided and states she cannot remember when the symptoms began but after the 1st dose it was the same or the next day when the reported events occurred and after the 2nd dose of the vaccine, she was extremely tired and does not remember what got better and what got worse and forgot about it but the pain kind of never went away and the swelling got better and was not as bad but the pain never went away. She had the same symptoms except after the 2nd dose of the vaccine her arm pain got better but never went away and she has restricted movement in her left arm and it began pretty much immediately the same day as the 2nd dose of the vaccine. Patient states she does not know her weight and she wished her weight to be 135 pounds but she was not sure but there may be 15-20 pounds plus. Patient did not receive any treatment for the adverse events. Patient states she does have an autoimmune disorder and has not been experiencing any symptoms from that just some very minor symptoms very recently and was more concerned than most people because she has this autoimmune disorder. Adverse events did not result in emergency room or physician office visit. Description of product complaint included details of the adverse events as experienced by the patient after the first and second doses, lot number details as provided and query about the possibility of production of antibodies after the vaccination as already updated in the initial narrative. On an unspecified date in 2021, the outcome of the events was recovered.