This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from a sales representative. The reporter is the patient. A 49 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 04Jan2022 (Batch/Lot number: unknown) at the age of 49 years as dose 3 (booster), single for Covid-19 immunisation. Relevant medical history included: "uterine polyp" (unspecified if ongoing), notes: procedure she had was just a removal of a uterine polyp and is a female surgery and this was diagnosed on 04Jan2022 due to a vaginal ultrasound. The patient's concomitant medications were not reported. Vaccination history included: Bnt162b2 (Dose 1, lot: EL3247), administration date: 23Mar2021, when the patient was 49 years old, for Covid-19 Immunization; Bnt162b2 (Dose 2, lot: EL3247), administration date: 13Apr2021, when the patient was 49 years old, for Covid-19 Immunization. The following information was reported: CHEST PAIN (non-serious), PAIN IN EXTREMITY (non-serious) all with onset 04Jan2022, outcome "recovered" (07Jan2022) and all described as "had pain in her arm through her chest area for three days following the booster"; ELECTROCARDIOGRAM ABNORMAL (non-serious) with onset 21Jan2022, outcome "unknown", described as "EKG abnormal"; SINUS BRADYCARDIA (non-serious) with onset 10Jan2022, outcome "unknown", described as "sinus bradycardia with frequent premature ventricular complexes". The events "EKG abnormal" and "sinus bradycardia with frequent premature ventricular complexes" were evaluated at the physician office visit. Relevant laboratory tests and procedures are available in the appropriate section. Additional Information: Reporter stated that her height is 5 feet 8 inches or 5 feet 8.5 inches and she received the Pfizer Booster vaccine on 04Jan2022 and then had an outpatient procedure with her (Withheld) on 10Jan2022 of which anesthesia was used so when she came out of anesthesia after her outpatient surgery her EKG was showing as abnormal and there was a concern at that time so the anesthesiologist recommended she see a cardiologist; states this was the first abnormal EKG she ever had. Reporter stated for the EKG, it was done on 10Jan2022 and was ongoing during the outpatient surgical procedure and what is listed on the EKG was sinus bradycardia with frequent premature ventricular complexes and that's what made the EKG abnormal and then also following her booster shot on 04Jan2022, she had pain in her arm through her chest area for three days following the booster in between 04Jan2022 and through about 07Jan2022 and the procedure was on 10Jan2022; states the pain is completely resolved and resolved on 07Jan2022 from what she can remember. stated that the procedure she had was just a removal of a uterine polyp and is a female surgery and this was diagnosed on 04Jan2022 due to a vaginal ultrasound and was diagnosed that day and knowing a surgery was coming up she had the Pfizer booster shot that was given to her on 04Jan2022 during that same office appointment. She was recovering and had a follow up appointment on 26Jan2022 that was a follow up for the procedure and everything is healing and she got a thumbs up and the healing is going well. Caller states hopefully all her results will come back negative. This follow-up is being submitted to notify that the lot/batch number is not available despite the follow-up attempts made. Follow-up attempts completed. No further information is expected.