heart palpitations; felt uncomfortable; sore arm; palpation; also has PVCs; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 51 year-old female patient received bnt162b2 (COMIRNATY), administered in arm right, administration date 14Aug2021 (Lot number: FC3181, Expiration Date: 31Oct2021) at the age of 51 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "PVCS" (unspecified if ongoing). There were no concomitant medications. The following information was reported: TENDERNESS (non-serious) with onset 2021, outcome "unknown", described as "palpation"; PAIN IN EXTREMITY (non-serious) with onset 14Aug2021, outcome "recovered" (16Aug2021), described as "sore arm"; PALPITATIONS (non-serious) with onset 16Aug2021, outcome "recovered" (02Sep2021), described as "heart palpitations"; VENTRICULAR EXTRASYSTOLES (non-serious) with onset 2021, outcome "unknown", described as "also has PVCs"; MALAISE (non-serious) with onset 16Aug2021, outcome "recovered" (02Sep2021), described as "felt uncomfortable". The events "palpation", "sore arm", "heart palpitations", "also has pvcs" and "felt uncomfortable" were evaluated at the physician office visit. Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of palpitations.  Additional Information: Caller states she got the first dose back on 14Aug2021. Caller states when she initially got the vaccine, she had no side effects, just a sore arm. Caller states after the third day, she started having heart palpitations. Caller states she also has PVCs, so she kind of thought it was that, but she hasn't had issues with that lately. Caller states as the week went on, it was more intense and it continued through that week. Caller states she got her shot on Saturday and it continued that whole week and it concerned her and she felt uncomfortable, so she called her Cardiologist and he was able to get her in on 26Aug2021. Caller states he decided he wanted to do some tests to make sure there wasn't any inflammation before she was going to get her second dose. Caller states she got the tests scheduled for 03Sep2021, the day before her second shot. Caller states they did a stress test and echocardiogram and by that time the palpitations slowed down and the tests came back good with no issues. She had her second dose 04Sep2021 and she did fine that day except a sore arm but early the next morning, she woke up sick and was achy all over, her back hurt, her legs were restless and she almost felt dizzy when getting up, she was nauseated, and stayed in bed until late afternoon, then she was able to get up and eat. Caller states late that night and the next day, 06Sep2021, she went to shower and noticed a red rash from one arm to the other arm, across her chest and under her ribs and around her belly button. Caller states it itched a little and she could feel that it was there. Caller states she went to see her doctor on 07Sep2021 and he thought she did have an allergic reaction to the vaccine. Caller states he prescribed her a steroid to knock out the reaction. Caller states she did have some palpitations again but not as intense as with the first dose.   No follow-up attempts are possible. No further information is expected.