Complaining of chest pain/sharp pain, needle pain in his chest/ the patient reported sharp stabbing chest pain more in the right side; Sweating; Felt sick; Diarrhea; Dehydrated; Headaches; Chills; Fatigue/extreme fatigue; A fast heartbeat; The patient reported sharp stabbing chest pain more in the right side, the first time it was more like the sternum.; Vomiting; Nausea; Slept on and off for about 4 days.; His blood sugar spiked up.; Pericarditis; This is spontaneous report received from a contactable consumer (patient mother). A 12-year-old male patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Batch/lot number: unknown and Expire Date: unknown) on 22May2021 via unspecified route of administration as 1st dose, single dose for covid-19 immunisation. As medical history it was reported that, he had allergies and allergic to a lot of things, mold, feather dust and everything and dyspepsia. He had been taking Claritin for allergies (but not when he got the vaccine). She stated her son did not have any allergies to medications. Concomitant mediations were not reported. On 26May2021, 4 days after that he was complaining of chest pain. Caller wants to know if her son should get the 2nd dose of the vaccine. Caller stated, "He had other symptoms. On Tuesday the chest pain went away then complained again on Thursday. His doctor gave him an EKG and his heart rate was fine. Caller did not take him to the ER at the time because did not want a medical bill. His blood sugar spiked up. He had sweating, vomiting, diarrhea. He said he had "sharp pain in my chest and never felt that before" His blood sugar spiked up. He was dehydrated. He had ketones from it. Caller gave him extra insulin. He had chest pain from the vaccine. It was on Tuesday and happened again on Thursday but had not come back since then. It subsided. EKG was ok." No one was informed (doctors). I took him to the regular doctor. She did not know. She was not aware of the symptoms. They are not specialized in the medications they are giving. It was hard to give them any kind of referral. Both of us had vomiting, headaches and chills. He had never had chest pains from any vaccines. He had fatigue, these are symptoms form the covid shot. It was 4 days and then 6 days after the vaccine. A fast heartbeat. HCP are not going to help. If they are dosing the covid shots but they are not given the vaccines they did not want to do anything. There was no accountability. Caller having a hard time. No one can give me an answer, no one. Not from the experts, no one was telling me. The vaccine administration should have been through the doctors, they will not take your data without understanding the vaccines. All the kids 12 and up and all male and like my son and probably a lot more but they are not saying it. Caller scared. My son did not have a heart defect. Caller did not know. Heart inflammation; they need to know if it was safe or not. It was scary to know no one knows what was going on or not. Caller asked about myocarditis. The patient had heart burn before but said the chest pain was not that. With the symptoms the caller saw online, she thinks the patient had pericarditis. The patient's next dose was on 12Jun2021.The caller was reading online that people reported chest pain and ended up in the emergency room and the caller did not want that. All the events occurred on an unspecified date in May2021. The patient underwent lab tests and procedures which included blood glucose increased: spiked up on May2021, electrocardiogram: fine on 25May2021 EKG and his heart rate was fine, heart rate increased: fast on 25May2021. The outcome of event chest pain was recovered on an unspecified date in May2021. Therapeutic measures were taken as a result of dehydrated. The outcome of blood sugar spiked up, sweating, vomiting, chills, diarrhea, felt sick, extreme fatigue, and slept on and off for about 4 days, dehydration, fast heartbeat and pericarditis was unknown.   Information on Lot/Batch number was available. Additional information has been requested.