bad mouth sores; 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 69-year-old female patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 22Sep2022 as dose number unknown (booster), single (Lot number: GH9693) at the age of 69 years, in arm for covid-19 immunisation; influenza vaccine (FLU [INFLUENZA VACCINE]), on 22Sep2022 as dose number unknown, single (Batch/Lot number: unknown), in arm for immunisation. The patient's relevant medical history included: "Fibromyalgia" (unspecified if ongoing); "Heart" (unspecified if ongoing); "heart burns" (unspecified if ongoing). Concomitant medication(s) included: PRAVASTATIN taken for cardiac disorder; CRESTOR taken for cardiac disorder; OMEPRAZOLE taken for dyspepsia; AMLODIPINE taken for cardiac disorder. Vaccination history included: Bnt162b2 (DOSE NUMBER UNKNOWN, SINGLE), for COVID-19 Immunization. The following information was reported: STOMATITIS (non-serious) with onset 22Sep2022, outcome "unknown", described as "bad mouth sores". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of stomatitis.  Additional information: Patient reported that she received the Bivalent COVID-19 Vaccine on 22Sep2022. She got mouth sores right after. She refers them as really bad; they have not gone away. She has visited 4 doctors and well nobody knows why did she have this mouth sores. All my shots were Pfizer. She had seen 4 doctors before and she was going to see the dentist this afternoon so, before she saw him she wanted to see if there was any other cases of this reported. Patient received 2 shots at the same time. She got the COVID shot in one arm and the other arm she got the flu shot (Suspect captured as Unspecified Flu Shot) and she did not know, she cannot tell you which was which and she did not write on card." Patient stated, "I take Omeprazole for heart burns, I take Amlodipine 10 mg for my heart and the statins (Pravastatin and Crestor), I was having trouble with, my body does not seem to like them very much. So, I am only taking Crestor twice a week now that is it and I have fibromyalgia that is something I have to tell you. So, you know everything, I was not taking statins at the time I got the shot. I had already gone off Crestor the first time and I did not start Pravastatin later on. Now I am back on Crestor but I only take it twice a week every 4 days (Further not clarified hence captured as event conservatively)." Patient stated, not in a few weeks she mean they tested me for she guess Lupus ANA which he said came back negative. She think they did CRP inflammation test, Acute inflammation test supposedly they were both negative but my doctor, my PCP she turned around and she attached notes to both these test and said that she should see a Rheumatologist so, she went to see the rheumatologist and he (Rheumatologist) said I do not understand why you are here, the test was negative, I said look at the, he did not have access he is at 2 different hospital here at (state name) and I brought it up my phone and I said look at the note from PCP, she said I should see a Rheumatologist. For treatment patient stated, "On 22nd I got the shot in September and on the 25th when I saw my first doctor she gave me an antiviral (Unspecified medication) which did nothing. She also gave me Lidocaine viscous for the pain which did help with the pain. The antiviral did not do anything." flu shot administration (22Sep2022): "Same day at the same time.".