Be safe, Cap.
CHICKA! All I can think of to say is just.....WHOW!.....and,

. Try not to think the worse until you hear from your doctor. There are probably different angles to approach treatment if flags like COPD pop up.
I know this is pretty scary. I was told that I would probably have to have a mitral valve replaced at some point in my life after the age of 50. 17 years past that age but so far so good but still, the thought of heart surgery just scares the bejeebers out of me in spite of knowing that it is a fairly routine surgery any more.
Try to relax until you can talk to the doc. Stress isn't helping you one bit. Prayers sent.