WAY TO GO JOHN!!! Yahoo!
Don't push it. You've been through hell. I took it easy for a week or so, then just started doing as much as I could slowly getting my life back. It'll come in time. This is like surgery for a broken leg. Your treatments were the surgery, now it takes time heal, and you will.
Relax as much as you can. The next week or two can be rough, but keep in mind you are done.
God Bless.
BTW: I'm 3 mos out and just about 100%. In fact, playing golf today. So, it'll come back to you. Just know that.
Well done my friend.
Rick