Overnight after shot just typical symptoms, some slight chills and next day just a little tired Day 2 after shot, April 11th.  Chest pain, squeezing in chest. Unusual but manageable and didn?t feel terrible otherwise,maybe slightly tired.  Tried leaning forward to make feel better.  Day 3 and 4 chest pain/heart squeezing continued and was bothersome and, went to Urgent Care this day  April 13th. EKG was a little abnormal and told to follow up with a cardiologist and take Advil.  The heart squeezing feeling continued.  Early morning hours April 14th very sick, excessive shaking (no fever), extreme nausea, faint feeling, dry cough (laying on bathroom floor).  Not much, if any chest pain at the time.  Went to ER.  Not much chest pain during ER visit but nauseous and shaking etc. Test were run.   Told that the symptoms were a delayed reaction to the vaccine and to follow up with a cardiologist because possible abnormal EKG and to take Advil as needed.  Overnight at home, no chest pain but an hour of the shaking and nausea returned but not as bad as before.  Over next couple days the chest pain/squeezing, slightly shakes and  light headedness would come and go and by 4-16 feeling pretty great.  The heart feeling mildly at most in the background but not debilitating.  Starting week of April 20th maybe 4-5 flare ups with chest pain and no pattern but not debilitating.  Could happen at rest.  April 27th bigger flare up more debilitating, had to lie down, heart squeezing  pain and maybe some wheezing when breathed in but not tightness in throat.  Lasted about 30 minutes.  Was just doing schoolwork with friends at the time so not under any physical or emotional stress at the time.  After this from April 20 to May 3rd feeling heart symptom mildly but not debilitating and could resume normal active life.  Had cardiology appt. May 3rd with nurse practitioner.  According to NP the 12 Lead EKG run that day correlated with abnormal EKG from ER.  Normal sinus rhythm with sinus arrhythmia Rightward axis Pulmonary disease pattern.  Incomplete right bundle branch block Abnormal ECG.  Given 4 lead heart monitor to wear for a week.  Also ordered a CV CT angiogram coronaries with calcium scoring.  The test could not be scheduled through them until July.  Also told could go on hiking trip out west and to stop and rest if felt pain.  For parents reassurance about hiking trip, had a second opinion over teleconference call with Dr., myocarditis specialist to confirm would be safe on hiking trip. Dr. said he should be good to go.  He said these heart symptoms related to the second vaccine could fade over time.  Hiking trip May 20th to May 30th.  Did fine with exertion and just a few small episodes of the chest pain, light headedness and maybe a little shaking but these were at rest.  Also, 4 lead heart monitor report was good.  Returned from trip May 30th and no chest pain or symptoms for approximately 3 weeks through June 17th.   June 18th went to urgent care for sore throat and ear.  Prescribed amoxycillin.  Took the amoxycillin and one Advil sinus, that evening had a heart squeezing episode return.  This was the first time in almost 3 weeks.  Did not take any more Advil sinus in case that caused the episode. Had another slight episode that evening.  Hiked next day June 19th and fine.  Then felt it slightly again after eating that afternoon of the 19th, also chest did feel a little tight all day.  Then felt it again that evening.  Still taking Amoxycillin as of today.