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?[
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