Have any of you gotten a feeling like incredible pressure in your body, I am thinking it could relate to hypotension and possible hole in heart/diastolic hart issue, problem with oxygen. I have low blood pressure and low pulse with it, but it comes on after been upright for awhile in my day, caffeine can make it worse, but just feel like want to explode, its very uncomfortable. Havent had it this bad for awhie and its reminding me how much it sucks and how uncomfortable it is. Makes me want to curl up in fetal position. Usually lying down for hour or two comes it down as I think the oxygen and heart pumping gets back to normal or however that diastolic problem works (that Cheney talks about). has anybody had anything like this without high b/p or high heart rate and what have you found relaxes it in acute phase?