I'm a 36 year old woman, about 22 weeks pregnant with my second child. I was diagnosed with idiopathic pericarditis a few weeks ago after complaining of chest pressure and shortness of breath. I was prescribed a Medrol dosepack. A follow-up echocardiogram showed evidence of a small patent foramen ovale with left to right shunting. (My docs have attributed other findings in the echocardiogram -- mild left atrial enlargement, trivial mitral, tricuspid and pulmonary valve insufficiency -- to pregnancy.) I am very concerned however about the PFO and am not sure how to proceed. How serious is this? Could it impact my pregnancy? How should I follow up, evaluate and monitor the condition after my pregnancy? Any advice will be most appreciated!