She decided to take the third Covid shot, so she had three Covid vaccine shots because she thought that she needed it since she has these health issues; I just made my own booster shot; When I had my third shot, I could barely move my arm that I had the shot in; When I am lifting it up it just really hurts; I just made my own booster shot; When I had my third shot, I could barely move my arm that I had the shot in; When I am lifting it up it just really hurts; she had three COVID vaccine instead of two; This is a spontaneous report from a noncontactable Nurse(patient). A female patient of unknown age received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Formulation; Solution for injection, Batch/Lot number and Expiration date not reported), dose 3, via an unknown route of administration on unknown date for COVID-19 immunisation. The patient previously received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Formulation; Solution for injection, Batch/Lot number and Expiration date not reported), dose 1 and dose 2, via an unknown route of administration on unknown date for COVID-19 immunisation. The patient's medical history included asthma, arm injury (after second dose of vaccine). Concomitant medications were not reported. The patient stated that she was taking Methotrexate, but she decided to take the third Covid shot, so she had three Covid vaccine shots because she thought that she needed it since she has these health issues. She had three Covid vaccines instead of two. The patient called because she thought that it might be interesting fact that on her own but had got some medical information, a year ago when the Covid vaccine has not been out yet, she asked her rheumatologist and being on Methotrexate she said, so now what happened was when they come out with the vaccine, he said that he was not sure maybe let us take you off the Methotrexate and then when patient get the injection then later you can get back on it. So, the time went on and there  was no more mentioning of holding Methotrexate and getting the injection. Then later this year, she went and got dose number 1 and dose number 2 and then, she called her doctor and called everybody and she said what about her immunity and what's going on because there was a lot of information on the fact that people that were on immunosuppressive drugs may not have the immunity like the other people (further clarification unknown). She enquired what she could do. Last year, she was pulled off from her work, she was an RN  and she was taken off her work because of the fact that she was on Methotrexate and was asthmatic (history). So, for a year she was like on house arrest, she did not go anywhere, she was not excited to call her guest because she got out in the air to put gas in her car and when it came down to her rheumatologist, rheumatologist said that the patient was okay, but she was not happy with possibly okay. So, the patient was out for an year and she did not had anything and she wanted to do the best that she can do to get the best immunity. Then patient thought that she was going to take herself ahead and take herself off the Methotrexate get herself the injection (Covid Vaccine) and then go back on it.  But she didn't go back on the Methotrexate because when she went off of it, she didn't have any of the symptoms that she had when she was first put on the Methotrexate (further clarification unknown). The patient had lab work done and the lab work showed they checked, what was that called, they checked the separate stuffs and her doctor said that patient was doing pretty good and was not taking it (Methotrexate) now. She just wanted to know that she had injected the third injection and took herself off the Methotrexate but that she was concerned and wanted to tell somebody that she don't have a concern about safety, she just wanted Pfizer to be aware that she did her own booster shot and the girl she talked to, said she want to talk to my safety advisor. The patient just made her own booster shot, her third shot. The patient just wanted to let you know that when she had her third shot, she could barely move her arm that she had the shot in, and it was unbelievable because when she was lifting it up it just really hurts. So, what happened was her first one, she had no side effects and second one, she had minimal side effects like somebody had hit you in the arm and her third one she got more because she knows does not have side effects like other covid vaccine. So, her third shot, the patient really felt, she means she can barely move her arm and it was really unbelievable and that went away in about 2 days and everything was fine, but she just wanted somebody to know that on her own the patient took third injection. The outcome of the events was reported as unknown.    No follow-up attempts are possible; information about lot/batch number cannot be obtained.