Hello!
Welcome Ashley~
Congratulation on a surgery date and best of luck. My best advice is be positive and get up and starts walking right away while you are in the hospital.
I am also in Portland, what a great city for walking. If you are anywhere near the downtown area walking the bridges and water front is great exercise. I am an early morning person and I do it at 5AM. I walk from 5th and Market to the waterfront, and then I cross the Hawthorne to the steel bridge and back along the waterfront. It is a nice circle and if you park on the water front and do the bridges there are of course no cross walks and can get in a nice smooth walk.
Let us know how it goes.