Hi Matt,
I partly understand what's going on in your mind/body. That is to say, I've experienced something similar after powerful healing (with several methods). I'm still going through the process. I don't particularly want to go into details. I also understand that my experience is not exactly like yours. My interpretation of this kind of situations is that the mind/body is clinging to old habits. It is afraid something will go totally wrong if the blockages (that it has built very carefully) are removed, AND because it is quite powerful, it can make your life quite unpleasant. It is not negative energy, it's just your mind/body doing its best, doing what it has learned. All I'm saying is, your mind/body thinks it is doing everything for your own good. Your job is to teach it other things.
You could concentrate on healing other parts of your body to make them stronger. That could take some weight off your heart. Be gentle with your heart.
-purjo
