I m a 29 yeor old female, had pericarditis 3 years ago (probably after a dental treatment). It was resolved by taking Ibuprofen. At that time my ECG was normal. Since then I still have similair pain, which comes an goes, usually only lasts a couple of minutes to an hour (just take Ibuprofen if it persists). I had another ECG done a couple of weeks ago, which showed consider right atrial enlargement . My blood pressure is normal (often 110/70 per the Target machine), not on any meds, not under stress, don t smoke or drink (never did either of them), BMI 19-20, normal cholesterol, try to eat healthy, no heart murmur. I have an echo scheduled for next week. What can I expect? What s the treatment, long time effect, can it get worst or develop something serious? Diet , excercise to prevent further damage? Any other recommendations?