This patient support community is for discussions relating to angina, angioplasty, arrhythmia, bypass surgery, cardiomyopathy, coronary artery disease, defibrillator, heart attack, heart disease, high blood pressure, mitral valve, pacemaker, PAD, stenosis, and stress tests.
Please make sure you know for certain the cause of the MI. It could be the normal changes that cause you to clot postpartum caused this, sort of an overkill by the body. Some women experience clots after delivery, yours just happened to be in a very bad spot (some are in the legs, occasionally the lung). It may have been a fluke thing and you'll never have this again, but make sure they follow up on this to ensure you do not have a clotting problem.
As for the permanent coumadin, yes, some doctors prefer the safe route. Sometimes they will wean people off of it, it depends on the situation.
If you never get pregnant again, your chances of a clot would be less, but by how much I would have no idea.
Congratulations on your new baby!