You can do this, Christine. It's so easy to get used to enjoying being at home and not having to deal with the stress of work, get into a routine of PT, etc. Before I went back I panicked and was afraid I had forgotten how to do my job, which is training. Although I realized it was like riding a bike and the work went well, I was sitting in my hotel room at night feeling very lonely and isolated, with a swollen and sore knee, wishing I were at home.
But the second week was easier, had a little less pain and loneliness, and I think you'll find it will get easier as you keep going back. I hope tomorrow goes well for you, and the next day, and the day after that ...