I would seek out one more Cardiologist and ask about a PFO as you have the headache, chest pains etc. Possible complications linked to patent foramen ovale include stroke, and migraines.
This is jmho to follow up so let us know how you are doing.
~~Kitt~~Moderator: Anxiety/Panic, Osteoarthritis, GERD/Heartburn and Heart/Cardiovascular Disease. www.healingwell.com"If you can't change the world, change your world"