On Nov 13th woke up with pain between back shoulder blades. went to the ER they told me that the proteins in my blood was pointing to a heart attack. I was in the hospital for 2 days; On Nov 13th woke up with pain between back shoulder blades. went to the ER they told me that the proteins in my blood was pointing to a heart attack. I was in the hospital for 2 days; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 31 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 10Nov2021 18:30 (Batch/Lot number: unknown) at the age of 31 years as dose 3 (booster), single for covid-19 immunisation; influenza vaccine (INFLUENZA VACCINE), administered in arm right, administration date 10Nov2021 (Batch/Lot number: unknown) as dose 1, single for immunisation. Relevant medical history included: "Allergy induced asthma" (unspecified if ongoing); "I don't smoke or drink" (unspecified if ongoing). Concomitant medication(s) included: OMEPRAZOLE. Vaccination history included: Bnt162b2 (Dose Number: 1, Batch/Lot No: EP6955, Vaccine Administration Time: 12:15 PM), administration date: 23Mar2021, when the patient was 30 years old, for Covid-19 immunization; Bnt162b2 (Dose Number: 2, Batch/Lot No: EW0153, Location of injection: Arm Left, Vaccine Administration Time: 11:00 AM), administration date: 13Apr2021, when the patient was 30 years old, for Covid-19 immunization. The following information was reported: MYOCARDIAL INFARCTION (hospitalization, medically significant, life threatening), PAIN (hospitalization, life threatening) all with onset 13Nov2021 10:00, outcome "unknown" and all described as "On Nov 13th woke up with pain between back shoulder blades. went to the ER they told me that the proteins in my blood was pointing to a heart attack. I was in the hospital for 2 days". The patient was hospitalized for myocardial infarction, pain (hospitalization duration: 2 day(s)). The event "on nov 13th woke up with pain between back shoulder blades. went to the er they told me that the proteins in my blood was pointing to a heart attack. i was in the hospital for 2 days" and "on nov 13th woke up with pain between back shoulder blades. went to the er they told me that the proteins in my blood was pointing to a heart attack. i was in the hospital for 2 days" was evaluated at the physician office visit and emergency room visit. Therapeutic measures were taken as a result of myocardial infarction, pain.  Clinical course: Reported event was on Nov 13th woke up with pain between back shoulder blades. went to the ER they told me that the proteins in my blood was pointing to a heart attack. I was in the hospital for 2 days and a bill of $56,000.00. The Dr. could not find anything wrong with my heart or veins and listed it as Myocarditis which could have came from the booster shot I received. I'm a healthy 31year old male I don't smoke or drink, not overweight and exercise weekly. Treatment received for the adverse event was blood thinner and heart medicine. There was no known allergies.  The lot number for bnt162b2 was not provided and will be requested during follow up.