<human>: i am having pains under my left breast and rib cage, also, I am having pains in my chest.  I have just been diagnosed with heart papitations and a leaking valve. I have been told, bc I am not getting dizzy or feeling fatigue, it not anything that I should weary about.  Could this be something serious?[
<bot>: Hello! Welcome and thank you for asking on Chat Doctor! I passed carefully through your question and would explain that it is important performing a comprehensive differential diagnosis between different possible causes that may lead to this clinical scenario: inflammation or a musculoskeletal pain, a lung disorder, a cardiac issue, etc. Coming to this point, I would recommend performing further tests to investigate for the possible underlying causes: - a chest X-ray study and pulmonary function tests-complete blood count, PCR, ESR for inflammation- an exercise cardiac stress test to exclude myocardial ischemia-thyroid hormone levels to exclude a thyroid gland dysfunction. You should discuss with your doctor on the above tests. Hope you will find this answer helpful! Kind regards, 