Yea you overdid it alright..lol the first thing I heard was I CRAWLED ON MY BELLY..lol
It sounds like you had a great time, and it sounds like you did everything right you just have to remember with AS your body just isn't as tough as somebody that doesn't have it.
Everything you do, do it with all your zest just do it a little more carefully.
The backpacking idea sounds great! It isn't something I would ever be able to do, but I know we have AS'ers that Run, Surf and do all kinds of things, I am sure some of them will answer.
Take it easy,
Lisa