Fred. . . LISTEN TO ME! I probably was more messed up before, during and after surgery than you were. I think I'm older, too. But life for me. . . LOOK OUT! I have enough medical issues to write a best-selling tear-jerker book, but I won't waste the time doing that. I'm too busy living life, or as another friend on another medical board said, "Wringing the very life out of each and every day I'm given."
When it comes to heart valve patients after surgery, there is nothing wrong until there is something wrong. You won't break, so go out and just live your life. Yes, I look a little bit funnier with my shirt off (I just got a new pacemaker, and it is even larger than the old one), but who cares? If anyone at the gym locker room looks at me funny, I just growl at them and tell them "You don't want to **** with the old guy."
I understand where you're at right now. I, too, was a mess after surgery for a valve, bypass and pacemaker. You know what? It took a while, but I got to the place where I am now -- where my life is NORMAL. True, normal may be just a tad bit different, but really not much difference at all. I still do everything I want to do. Once I got past the healing and rehab, I never looked back. I'm stronger now and in better shape than I was before surgery, and I wasn't bad even then. Life is good. Stick with it, and you will get there.
Time has a way of smoothing over the problems. As long as none of them become chronic, you will re-define a new normal for yourself. Then a couple of years later you will realize that the new normal really isn't much different than the old. It is yours for the taking. Grab that brass ring!
P.S. OK - I just looked. You're a couple of years older than I but I still think I was more messed up before, during and after surgery. ;-)