Palpitation; Headache; Diarrhea; I felt like I have a heart inflammation or something; Heart beating was 140 one time, 147 something right after the next day; Severe panic attack; symptoms are getting worse; This is a spontaneous report from a contactable consumer (patient). This is the first case out of the 2 cases. A 35-year-old patient of an unspecified gender received BNT162b2 (PFIZER BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number- EW0167) via an unspecified route of administration in left arm as 1st dose, single dose for COVID-19 immunization. Medical history included COVID in April 2018. Concomitant medications were not reported. Patient stated, I got the first shot for COVID-19 and I have, like a lot of reaction and it was taking various days for me, as well as my son but he is 14 so, we just decide not to take it since the side effects were very severe we both got COVID (History) on April 2018 and we recovered and we took the shot again, I am sorry we took the shot after recovery and then my side effects were like palpitation, severe like headache for 3 weeks and then diarrhea and I don't have fever but I had a lot of like, I even went to the hospital because I felt like all of my symptoms were getting worse, they did test and everything and they told me that I was not having any heart problem or anything that might cause palpitations. I was actually going to the cardiologist now like I was taking some test because I felt like I have a heart inflammation or something so I just decided that I will do it and then my son he is 14, he got the first shot and then he could not walk for a week, he was like he can walk but he was like limping like from one place to another, he had like severe pain in both leg and the arm was like a sore a little bit at the first day, for hours then the next day and he was like he could not really walk normally he was like jumping with thorns for a whole week. I just want to report this because I just did not see such symptoms like I mean I saw the palpitation were the part of side effect. When paraphrased the above concern, patient stated, I did not have the fever but I had the weird like the heart beating was 140 one time, 147 something right after the next day. I took the shot so I was having severe panic attack it was really sad I mean for a whole week. This was my third week, I mean I was supposed to get the second shot but I decided to go to my doctor and he told me I should reconsider since I have these palpitations. Consumer stated, why do you need the address. I don't want to give my mailing address. Patient further stated, Yes were you going to report these symptoms, I saw in the page where the people gave me the medication, I mean with the vaccine they told me that it will show the side effect, palpitation and stuff like that. Patient stated, No, I mean now I do because I am going to see a cardiologist to check my heart and all. Patient added, I just want to report this because I was not getting the second one because I had like a very bad side effect, so I do not want any problem, so I just do not want to get the second shot and I just do not want my son to get that either. The outcome of the event Palpitation was not recovered and outcome of the other events was unknown.  QR comment: Since manufacturer name was not available over the call, hence 'Is this the Pfizer product?' Tab was left unchecked.   This LRN W2021387350 is cross linked to LRN W2021387349