Your more than welcome. Im not a doctor so understand I can't diagnose anything but can be an ear to listen (via Chat) and share things that I also have gone thru. So, I hope I can help more in way of support to understand something I have experienced myself.
I gather from your post so far that they are monition you and you have a leaking valve which depending on which value is quite common. I myself had what they called a heart Murmur which is the sound it makes when it closes and a small amount of blood leaks thru. That I actually had maybe since a kid myself and did not lead to my other problems. Now I'm guessing they are treating the BP problem with medication? Has you BP improved?
As for the pain I personally have not had any pain per say or on Nitro for the heart itself. I do know that a blockage depending on how much can cause pain . You mentioned a family history did you bring that up with your Doctors? also on that note Im assuming you are under the care of a cardiologist, You had mentioned rhythm problems in a prior post, did they say anything about what kind of rhythm problems. Thats the area I'm most familiar with. So my hope is that you can get some more answers as to the whole picture. I myself can relate to the fear of what's next so I'm hoping you receive some answers soon. Do you have a follow-up scheduled once all the tests are in?