Obviously the key for you will be determining if your blood clotting issues are the result of a heart issue, a vascular issue, or something else. There are ways of estimating pressures via Doppler echo indices, although a catherization would provide more definitive results. Nothing you've mentioned about the results of your echo is unusual, nor would it be reflective of an intrinsic cardiac issue causing your clots. Your doctors will simply have to continue to analyze and evaluate further test results to eventually figure out if you have some sort of peripheral vascular disorder or if there is indeed something more central such as severe pulmonary hypertension or a million other things causing these issues. In the meantime, it's just key that you follow their advice in terms of restrictions, medications, and other treatments to prevent the formation of further issues and/or complications from those embolisms and clots that do exist.
Since it said that I had dilated inferior vena cava I wonder if that suggests increased pressure within the arteries which suggests pulmonary hypertension which would be caused from the blood clots?
mitral regurgitation at least, is quite common. sometimes in trace amounts others on moderate amounts. theres no telling if you have had this the majority of your life if you didn't ever have an echo scan before all this happened.
I am surprised that they are so cavalier about that. My wife had the same symptoms and the family doctor said, take her to the ER right away, which I did. They found two blood clots in her lung and put her on Coumadin. They observed her for several days until her INR had stabilized. After several months she is still on it - at least until they do another scan several months from now. The conclusion was, since she had complained about her left leg previously, that the bloods had traveled to her lungs. The blood clot in her leg is gone now.